Granted Patent
Utility
US 4,531,300 · App. 06/607,997
Electronic inclination gauge with acceleration compensation
Inventors:
Jeffrey C. Heidel, Harold L. Swartz
Patented Case
View Patent ↗
Granted: Jul 30, 1985
Filed: May 7, 1984
Inventors
Jeffrey C. Heidel
Harold L. Swartz
Assignee (at issue)
Sperry Corp.
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.