US3621720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Identification system
Assignee: Mosler Safe Co
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Filing: 1969-01-27
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Granted: 1971-11-23
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Expires: 1989-01-27
Abstract
Abstract A SYSTEM FOR VERIFYING THE IDENTIFY OF A PERSON WHEREIN VERIFICATION IS ESTABLISHED BY A FAVORABLE COMPARISON BETWEEN (A) THE TIME-VARYING FORCE BETWEEN A WRITING INSTRUMENT AND WRITING SURFACE PRODUCED WHEN THE PERSON TO BE IDENTIFIED WRITES HIS SIGNATURE AND (B) STORED DATA CORRELATED TO THE TIME-VARYING FORCE PREVIOUSLY GENERATED BY A PERSON OF KNOWN IDENTITY WHILE WRITING HIS SIGNATURE.
Inventors
- 👤 Robert Kenley Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 02:17
CPC Classifications
B; B43; B43K; B43K29/00; B43K29/08; G; G06; G06V; G06V10/00; G06V10/10; G06V10/12; G06V40/00; G06V40/30; G07; G07C; G07C9/00; G07C9/30; G07C9/32; G07C9/35
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-22 | 1975-05-24 | 1975-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-22 | 1979-05-24 | 1979-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-22 | 1983-05-24 | 1983-11-23 | $7700.00 | Window Closed / Lapsed |