US1456090A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve mechanism
Assignee: General Electric Co
•
Filing: 1920-02-14
•
Granted: 1923-05-22
•
Expires: 1940-02-14
Abstract
No abstract record available.
Inventors
- 👤 Frank S Bennett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:48
CPC Classifications
F; F01; F01D; F01D17/00; F01D17/10; F01D17/12; F01D17/14; F01D17/141; F01D17/145; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86928; Y10T137/86936; Y10T137/87048
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) | 1926-05-21 | 1926-11-20 | 1927-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-05-21 | 1930-11-20 | 1931-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-05-21 | 1934-11-20 | 1935-05-22 | $7700.00 | Window Closed / Lapsed |