IP Library › Granted Patent US 5,874,731
Granted Patent Utility
US 5,874,731 · App. 08/972,494

Ambient light filter

Inventor: Scott C. Swanson
Patented Case View Patent ↗
Granted: Feb 23, 1999 Filed: Nov 18, 1997
Inventor
Scott C. Swanson
Assignee (at issue)
Schlumberger Industires, S.A.

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Quick Facts
Patent No.
US 5,874,731
App. No.
08/972,494
Filed
1997-11-18
Granted
1999-02-23
Kind
A