IP Library Granted Patent US 4,068,868
Granted Patent Utility
US 4,068,868 · App. 05/609,584

Flexible joints for marine risers

Inventor: Juergen H. Ohrt
Patented Case View Patent ↗
Granted: Jan 17, 1978 Filed: Sep 2, 1975
Inventor
Juergen H. Ohrt
Assignee (at issue)
Vetco Offshore Industries, Inc.

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.

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Quick Facts
Patent No.
US 4,068,868
App. No.
05/609,584
Filed
1975-09-02
Granted
1978-01-17
Kind
A