IP Library › Granted Patent US 5,177,868
Granted Patent Utility
US 5,177,868 · App. 07/871,960

Process of making an insulated door

Inventors: Donald Bruce Kyle, Michael A. Frost
Patented Case View Patent ↗
Granted: Jan 12, 1993 Filed: Apr 21, 1992
Inventors
Donald Bruce Kyle
Michael A. Frost
Assignee (at issue)
United Dominion Industries, Inc.

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Quick Facts
Patent No.
US 5,177,868
App. No.
07/871,960
Filed
1992-04-21
Granted
1993-01-12
Kind
A