Granted Patent
Utility
US 4,337,075 · App. 06/274,945
Twin center cooling fin for tip type bushing
Inventors:
John R. Mechel, Eric J. Brosch
Patented Case
View Patent ↗
Granted: Jun 29, 1982
Filed: Jun 18, 1981
Inventors
John R. Mechel
Eric J. Brosch
Assignee (at issue)
Manville Service Corporation
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.