Patent US3519767A successfully refreshed from Google Patents.
US3519767A
Expired / Lapsed
US
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Punch card reader including a series of switch assemblies mounted on the edge of a circuit board
Assignee: DAVID H SINKER
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Filing: 1966-10-20
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Granted: 1970-07-07
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Expires: 1986-10-20
Abstract
No abstract record available.
Inventors
- 👤 David H Sinker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:35
CPC Classifications
G; G06; G06K; G06K7/00; G06K7/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2869790A
Cited
US2995700A
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US2903529A
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US3131017A
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US3294957A
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US3262082A
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FR1400502A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-06 | 1974-01-05 | 1974-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-06 | 1978-01-05 | 1978-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-06 | 1982-01-05 | 1982-07-07 | $7700.00 | Window Closed / Lapsed |