IP Library › Granted Patent US 4,892,442
Granted Patent Utility
US 4,892,442 · App. 07/021,237

Prelubricated innerduct

Inventor: John Scott Shoffner
Patented Case View Patent ↗
Granted: Jan 9, 1990 Filed: Mar 3, 1987
Inventor
John Scott Shoffner
Assignee (at issue)
Dura-Line LLC

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Quick Facts
Patent No.
US 4,892,442
App. No.
07/021,237
Filed
1987-03-03
Granted
1990-01-09
Kind
A