Light Signatures, Inc.
Patent Owner
Stats
- 0 US PATENTS IN FORCE
- 0 US APPLICATIONS PENDING
- Jun 11, 1991 most recent publication
Details
- 0 Issued Patents
- 0 Issued in last 3 years
- 0 Published in last 3 years
- 1,504 Total Citation Count
- Jun 22, 1981 Earliest Filing
- 26 Expired/Abandoned/Withdrawn Patents
Patent Activity in the Last 10 Years
Technologies
- No Technology to Display
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Recent Publications
- No Recent Publications to Display
Recent Patents
- No Recent Patents to Display
Expired/Abandoned/Withdrawn Patents
Patent #
Title
Status
Filing Date
Issue/Pub Date
Intl Class
4916294 System for reliable digital recording on unreliable magnetic mediaExpiredJul 25, 88Apr 10, 90[G06K]
4686527 Verification system for document substance and contentExpiredNov 12, 85Aug 11, 87[H04Q, G06K]
4675669 System of issuing secure documents of various denominationExpiredJul 11, 85Jun 23, 87[H04Q, G06K]
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