Assertion: space pen | /r/CapableOf | become famous
Facets:
value: since
type: TEMPORAL
value: through its use by astronauts
type: CAUSE
Source sentences:
text: The “space pen” that has since become famous through its use by astronauts was developed independently by Paul C. Fisher of the Fisher Pen Co., who spent his own money on the project and, once he perfected his AG-7 “Anti-Gravity” Space Pen, offered it to NASA.