Patent US2481811A successfully refreshed from Google Patents.
US2822480A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bistable state circuit
Assignee: NCR Voyix Corp
•
Filing: 1950-07-25
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Granted: 1958-02-04
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Expires: 1970-07-25
Abstract
No abstract record available.
Inventors
- 👤 Carl L Isborn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:49
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/45; H03K3/49
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1952186A
Cited
US1968576A
Cited
US2428990A
Cited
US2443488A
Cited
US2445800A
Cited
US2519513A
Cited
US2524154A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-03 | 1961-08-05 | 1962-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-03 | 1965-08-05 | 1966-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-03 | 1969-08-05 | 1970-02-04 | $7700.00 | Window Closed / Lapsed |