IP Library › Granted Patent US 4,380,959
Granted Patent Utility
US 4,380,959 · App. 06/174,812

Speed control for gravity operated trolleys

Inventors: John H. Brems, James T. Graham
Patented Case View Patent ↗
Granted: Apr 26, 1983 Filed: Aug 4, 1980
Inventors
John H. Brems
James T. Graham
Assignee (at issue)
F. Jos. Lamb Company

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Quick Facts
Patent No.
US 4,380,959
App. No.
06/174,812
Filed
1980-08-04
Granted
1983-04-26
Kind
A