Granted Patent
Utility
US 4,371,099 · App. 06/207,891
Size-compensating collar in a pump dispenser
Inventors:
Donald D. Foster, Wallace F. Magers
Patented Case
View Patent ↗
Granted: Feb 1, 1983
Filed: Nov 18, 1980
Inventors
Donald D. Foster
Wallace F. Magers
Assignee (at issue)
Realex Corporation
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.