IP Library › Granted Patent US 4,248,546
Granted Patent Utility
US 4,248,546 · App. 06/052,397

Manhole ceiling tent

Inventor: Donald J. Danner
Patented Case View Patent ↗
Granted: Feb 3, 1981 Filed: Jun 27, 1979
Inventor
Donald J. Danner

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Quick Facts
Patent No.
US 4,248,546
App. No.
06/052,397
Filed
1979-06-27
Granted
1981-02-03
Kind
A