Patent US3511571A successfully refreshed from Google Patents.
US3511571A
Expired / Lapsed
US
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Method and apparatus for comparing patterns
Assignee: Individual
•
Filing: 1966-02-28
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Granted: 1970-05-12
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Expires: 1986-02-28
Abstract
No abstract record available.
Inventors
- 👤 Hugh Malcolm Ogle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:10
CPC Classifications
G; G06; G06V; G06V40/00; G06V40/10; G06V40/12; G07; G07C; G07C9/00; G07C9/30; G07C9/32; G07C9/37
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1775794A
Cited
GB563973A
Cited
US2646717A
Cited
US2787188A
Cited
US2952181A
Cited
US2936607A
Cited
US3200701A
Cited
US3324296A
Cited
US3288018A
Cited
US3350156A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-11 | 1973-11-10 | 1974-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-11 | 1977-11-10 | 1978-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-11 | 1981-11-10 | 1982-05-12 | $7700.00 | Window Closed / Lapsed |