US2712043A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Instantaneous-acting relay for controlling the strength of a current
Assignee: Individual
•
Filing: 1952-03-17
•
Granted: 1955-06-28
•
Expires: 1972-03-17
Abstract
No abstract record available.
Inventors
- 👤 Maupas Charles Francois Emile
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:45
CPC Classifications
H; H01; H01H; H01H71/00; H01H71/10; H01H71/12; H01H71/24; H01H71/2472; H01H71/2454; H01H71/2481; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20207; Y10T74/20238
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1763284A
Cited
US1906477A
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US2323266A
Cited
US2472275A
Cited
US2474029A
Cited
US2572637A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-06-27 | 1958-12-27 | 1959-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-06-27 | 1962-12-27 | 1963-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-06-27 | 1966-12-27 | 1967-06-28 | $7700.00 | Window Closed / Lapsed |