IP Library Granted Patent US 4,240,839
Granted Patent Utility
US 4,240,839 · App. 06/052,702

Thermal insulation material

Inventors: Charles E. Crepeau, Robert F. Mulvey
Patented Case View Patent ↗
Granted: Dec 23, 1980 Filed: Jun 28, 1979
Inventors
Charles E. Crepeau
Robert F. Mulvey
Assignee (at issue)
General Electric 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.

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 4,240,839
App. No.
06/052,702
Filed
1979-06-28
Granted
1980-12-23
Kind
A