IP Library › Granted Patent US 4,272,222
Granted Patent Utility
US 4,272,222 · App. 06/002,597

Boom apparatus

Inventor: Charles J. Davis
Patented Case View Patent ↗
Granted: Jun 9, 1981 Filed: Jan 11, 1979
Inventor
Charles J. Davis
Assignee (at issue)
Genewal Co., Ltd.

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Quick Facts
Patent No.
US 4,272,222
App. No.
06/002,597
Filed
1979-01-11
Granted
1981-06-09
Kind
A