US2025440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual valve control mechanism
Assignee: Individual
•
Filing: 1933-12-29
•
Granted: 1935-12-24
•
Expires: 1953-12-29
Abstract
No abstract record available.
Inventors
- 👤 Stephen J Carmody
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:07
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/44; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87056; Y10T137/87072; Y10T137/87571; Y10T137/87676; Y10T137/87684; Y10T137/87692
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) | 1938-12-23 | 1939-06-24 | 1939-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-12-23 | 1943-06-24 | 1943-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-12-23 | 1947-06-24 | 1947-12-24 | $7700.00 | Window Closed / Lapsed |