Patent US1978737A successfully refreshed from Google Patents.
US1978737A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solenoid
Assignee: Honeywell Inc
•
Filing: 1931-03-23
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Granted: 1934-10-30
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Expires: 1951-03-23
Abstract
No abstract record available.
Inventors
- 👤 George D Bower
- 👤 Willis H Gille
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:09
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/06; H01F7/08; H01F7/16; H01F7/1607; Y; Y10; Y10S; Y10S4/00; Y10S4/03; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87265; Y10T137/87507
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) | 1937-10-29 | 1938-04-30 | 1938-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-10-29 | 1942-04-30 | 1942-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-10-29 | 1946-04-30 | 1946-10-30 | $7700.00 | Window Closed / Lapsed |