IP Library Granted Patent US 4,296,827
Granted Patent Utility
US 4,296,827 · App. 05/922,952

Air-gun fire time sensor

Inventors: Ben B. Thigpen, James A. Porter
Patented Case View Patent ↗
Granted: Oct 27, 1981 Filed: Jul 10, 1978
Inventors
Ben B. Thigpen
James A. Porter
Assignee (at issue)
Western Geophysical Company of America

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.

Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 4,296,827
App. No.
05/922,952
Filed
1978-07-10
Granted
1981-10-27
Kind
A