Granted Patent
Utility
US 4,437,813 · App. 06/374,820
Gas receiving and transmitting system
Inventor:
Walter B. Ingram
Patented Case
View Patent ↗
Granted: Mar 20, 1984
Filed: May 4, 1982
Inventor
Walter B. Ingram
Assignee (at issue)
Frick Company
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.