US1684249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic circuit controller
Assignee: General Electric Co
•
Filing: 1925-02-09
•
Granted: 1928-09-11
•
Expires: 1945-02-09
Abstract
No abstract record available.
Inventors
- 👤 Jr Alexander R Stevenson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:57
CPC Classifications
H; H02; H02H; H02H7/00; H02H7/22; H02H7/222; H01; H01H; H01H83/00; H01H83/20; H01H2083/203
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1931-09-11 | 1932-03-12 | 1932-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-09-11 | 1936-03-12 | 1936-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-09-11 | 1940-03-12 | 1940-09-11 | $7700.00 | Window Closed / Lapsed |