Granted Patent
Utility
US 4,361,073 · App. 05/452,050
Sub-critical time modulated control mechanism
Inventors:
John A. Oelrich, Albert J. Divigard
Patented Case
View Patent ↗
Granted: Nov 30, 1982
Filed: Mar 18, 1974
Inventors
John A. Oelrich
Albert J. Divigard
Assignee (at issue)
Chandler Evans Inc.
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.