IP Library › Granted Patent US 5,991,004
Granted Patent Utility
US 5,991,004 · App. 08/627,892

Lens focus shift sensor

Inventors: John David Wallace, Shepard D. Johnson
Patented Case View Patent ↗
Granted: Nov 23, 1999 Filed: Apr 3, 1996
Inventors
John David Wallace
Shepard D. Johnson
Assignee (at issue)
MRS Technology, Inc.

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Quick Facts
Patent No.
US 5,991,004
App. No.
08/627,892
Filed
1996-04-03
Granted
1999-11-23
Kind
A