US2764634A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic recording dial pulse storage register
Assignee: AT&T Inc
•
Filing: 1950-09-07
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Granted: 1956-09-25
•
Expires: 1970-09-07
Abstract
No abstract record available.
Inventors
- 👤 Chester E Brooks
- 👤 Clarence A Lovell
- 👤 John H Mcguigan
- 👤 Orlando J Murphy
- 👤 David B Parkinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:14
CPC Classifications
H; H04; H04Q; H04Q3/00; H04Q3/42; G; G11; G11B; G11B5/00; H04M; H04M15/00; H04M15/04; H04M15/10; H04M3/00; H04M3/60; H04M3/64
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2540654A
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US2523365A
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US2701095A
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US2609439A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-25 | 1960-03-26 | 1960-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-25 | 1964-03-26 | 1964-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-25 | 1968-03-26 | 1968-09-25 | $7700.00 | Window Closed / Lapsed |