Standard Template Construct (STC) - M32-M39: Unknown Date.M32 - During the period of Imperial history known as "The Forging," there was a slowing of the decline in the Imperium's technology level and new growth in the interstellar economy due to the rediscovery of a valuable STC database in the Cana System as the Imperium expanded.Unknown Date.M35 - At the end of the Icaria Crusade in the 35th Millennium, an ancient manufactorum complex with databanks from the Age of Technology was discovered on the world of Fornost by the Frateris Templars. The Ecclesiarchy bartered the knowledge of the location of these databanks in exchange for exclusive rights to any technologies stored within them. While the databanks only had half-formed STC designs for a flame thrower equipped tank, these STCs were combined with the STC for the Rhino to create the Immolator subpattern of that vehicle later used by the Orders Militant of the Adepta Sororitas.Unknown Date.M35 - An intact STC was discovered within a starship that had crashed on the Hive World of Necromunda by a group that would eventually become House Van Saar, one of Hive Primus' Clan Houses. This STC database was incomplete and flawed, and unleashed high levels of radiation from its damaged power core on those who made use of it. One of House Van Saar's goals is to recover the missing pieces of this STC that would allow it to find a way to repair it to prevent the radioactive contamination.104.M36 - The War of Recovery unfolded when patchy reports of technological wonders on the planets of the Mortuam Chain reach Mars. Hoping that it might be possible to recover new STC database fragments, the Adeptus Mechanicus launched an expedition which began an escalating war that lasted for over a standard century. Aided by the advanced weaponry they recovered, the forces of the Mechanicus freed the Human colonies of the region from xenos occupation and several first generation copies of STC databases concerning certain individual technologies were returned in triumph to Mars.Unknown Date.M36 - The STC templates for cybernetic combat suits known as the XV Bellam Ravager and Thermae Missile Suit were discovered by the Adeptus Mechanicus, but proved too difficult to reproduce.Unknown Date.M36 -  The STC for a larger chassis of Land Speeder are discovered by the Dark Angels Chapter. These fragments would be used to created the Land Speeder Vengeance and Darkshroud variants in use by both the Dark Angels and their Unforgiven successors.Unknown Date.M36 - The STC schematic for the Centurion was unearthed in the aftermath of the Age of Apostasy and, once sanctioned by the Adeptus Mechanicus, the vehicles produced from it found their way into the armouries of almost every Space Marine Chapter.322 - 384.M39 - STC fragments called the "Aegis Data Fragments" were discovered in the Calixis Sector during the Adranitian phase of the Angevin Crusade. They contain a few new small arms patterns, systems schematics and augury interfaces. Known schematics within these fragments included the Minerva-Aegis Las Carbine, Aegis Anbaric Shock Blaster Pistol, and the Sollex-Aegis Energy Blade.Prior to 189.887.M39 - Archmagos Plosk recovered five print-outs from a first-generation STC database.189.887.M39 - An STC was discovered aboard the Spirit of Eternity, a starship from the Age of Technology entombed  within the space hulk Death of Integrity. Archmagos Plosk was able to download a significant fraction of the database's contents. It turned out that this database was an uncorrupted STC, but the ship's guiding Machine Spirit (artificial intelligence) was insane with grief over the death of the vessel's original captain and disgusted by how Humanity's civilisation had regressed during the Age of Strife and the Age of the Imperium. The original starship Spirit of Eternity contained one of the last, complete STC databases ever created during the Age of Technology. The vessel possessed technologies that made it capable of both time travel and travel across intergalactic distances.Unknown Date.M39 - The STC template for the Omega Pattern Plasma Blastgun was discovered by Explorator Magos Valistle Hum'nal.