Patent US4819620A successfully refreshed from Google Patents.
US2946984A
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US
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Tape-to-card converter circuit
Assignee: AT&T Inc
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Filing: 1956-05-31
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Granted: 1960-07-26
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Expires: 1976-05-31
Abstract
No abstract record available.
Inventors
- 👤 Rolland N Breed
- 👤 Willard B Groth
- 👤 Gordon C Irwin
- 👤 Lindley A Kille
- 👤 Riggs George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:12
CPC Classifications
G; G06; G06K; G06K1/00; G06K1/14; H; H01; H01H; H01H47/00; H01H47/002; H01H47/004; H01H47/22; H01H47/226; H01H51/00; H01H9/00; H01H9/16; H01H9/167
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2168198A
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US2302535A
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US2389275A
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US2512038A
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US2647250A
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US2590302A
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US2635197A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-26 | 1964-01-25 | 1964-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-26 | 1968-01-25 | 1968-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-26 | 1972-01-25 | 1972-07-26 | $7700.00 | Window Closed / Lapsed |