US3061818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic core register circuits
Assignee: AT&T Inc
•
Filing: 1956-12-12
•
Granted: 1962-10-30
•
Expires: 1976-12-12
Abstract
No abstract record available.
Inventors
- 👤 Neal D Newby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:06
CPC Classifications
H; H04; H04M; H04M3/00; H04M3/22; H04M3/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2719965A
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US2997696A
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US2814676A
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US2907019A
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US2820956A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-29 | 1966-04-30 | 1966-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-29 | 1970-04-30 | 1970-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-29 | 1974-04-30 | 1974-10-30 | $7700.00 | Window Closed / Lapsed |