US2020069A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Interlock mechanism
Assignee: General Electric Co
•
Filing: 1933-11-25
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Granted: 1935-11-05
•
Expires: 1953-11-25
Abstract
No abstract record available.
Inventors
- 👤 Gordon R Langley
- 👤 Dorsey L Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:43
CPC Classifications
H; H01; H01H; H01H33/00; H01H33/02; H01H33/46; H01H33/52; H01H9/00; H01H9/20; H01H9/26; H01H9/262
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) | 1938-11-04 | 1939-05-06 | 1939-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-11-04 | 1943-05-06 | 1943-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-11-04 | 1947-05-06 | 1947-11-05 | $7700.00 | Window Closed / Lapsed |