US2574283A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Predetermined electronic counter
Assignee: Individual
•
Filing: 1946-03-27
•
Granted: 1951-11-06
•
Expires: 1966-03-27
Abstract
No abstract record available.
Inventors
- 👤 John T Potter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:11
CPC Classifications
H; H03; H03K; H03K23/00; H03K23/82; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/30084; Y10T409/300896
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2272070A
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US2401621A
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US2403873A
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US2398150A
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US2394924A
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US2398771A
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GB609502A
Cited
US2536955A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-05 | 1955-05-07 | 1955-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-05 | 1959-05-07 | 1959-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-05 | 1963-05-07 | 1963-11-06 | $7700.00 | Window Closed / Lapsed |