IP Library › Granted Patent US 4,653,541
Granted Patent Utility
US 4,653,541 · App. 06/749,075

Dual wall safety tube

Inventors: Richard M. Oehlschlaeger, John R. Greco
Patented Case View Patent ↗
Granted: Mar 31, 1987 Filed: Jun 26, 1985
Inventors
Richard M. Oehlschlaeger
John R. Greco
Assignee (at issue)
Parker-Hannifin Corporation

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Quick Facts
Patent No.
US 4,653,541
App. No.
06/749,075
Filed
1985-06-26
Granted
1987-03-31
Kind
A