IP Library Granted Patent US 4,248,015
Granted Patent Utility
US 4,248,015 · App. 05/663,548

Multi-pane glazed door defrosting system

Inventors: Michael E. Stromquist, James J. Heaney
Patented Case View Patent ↗
Granted: Feb 3, 1981 Filed: Mar 3, 1976
Inventors
Michael E. Stromquist
James J. Heaney
Assignee (at issue)
Anthony's Manufacturing Company, 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.

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 4,248,015
App. No.
05/663,548
Filed
1976-03-03
Granted
1981-02-03
Kind
A