US2701325A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control for relay circuits
Assignee: AB Chance Co
•
Filing: 1951-04-20
•
Granted: 1955-02-01
•
Expires: 1971-04-20
Abstract
No abstract record available.
Inventors
- 👤 Walter M Altherr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:12
CPC Classifications
H; H01; H01H; H01H43/00; H01H43/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US941777A
Cited
US2009601A
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US2211221A
Cited
US2182637A
Cited
CH214216A
Cited
US2372435A
Cited
US2386009A
Cited
US2437756A
Cited
US2557727A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-31 | 1958-08-02 | 1959-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-31 | 1962-08-02 | 1963-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-31 | 1966-08-02 | 1967-02-01 | $7700.00 | Window Closed / Lapsed |