Assertion: patent | /r/HasProperty | granted for improvement
Facets:
value: frequently
type: TEMPORAL
Source sentences:
text: Nor shall any addition of an improvement be made to any patent heretofore granted, nor any new patent to be issued for an improvement made in any machine, manufacture, or process, to the original inventor, assignee or possessor, of a patent therefor, nor any disclaimer be admitted to record, until a duplicate model and drawing of the thing originally intended, verified as aforesaid, shall have been deposited in the patent office, if the commissioner shall require the same; nor shall any patent be granted for an invention, improvement, or discovery, the model or drawing of which shall have been lost, until another model and drawing, if required by the commissioner, shall, in like manner, be deposited in the patent office:
text: While patents are frequently granted for improvements, this requirement typically means that at least one feature of a claimed invention must not have been taught or suggested by any prior public disclosure.