US2004194A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve controlling system
Assignee: Individual
•
Filing: 1930-05-31
•
Granted: 1935-06-11
•
Expires: 1950-05-31
Abstract
No abstract record available.
Inventors
- 👤 Lacy-Mulhall Patrick De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:38
CPC Classifications
G; G05; G05D; G05D7/00; G05D7/03; Y; Y10; Y10S; Y10S239/00; Y10S239/15; Y10T; Y10T137/00; Y10T137/1842; Y10T137/1939; Y10T137/1963; Y10T137/1987; Y10T137/2496; Y10T137/2514; Y10T137/2521; Y10T137/5762; Y10T137/6851; Y10T137/6966; Y10T137/6969; Y10T137/7039; Y10T137/7287; Y10T137/7297; Y10T137/7303; Y10T137/7313; Y10T137/7316; Y10T137/7339; Y10T137/7342; Y10T137/7722; Y10T137/7723; Y10T137/7726; Y10T137/7737; Y10T137/8593; Y10T137/86187; Y10T137/8622; Y10T74/00; Y10T74/11
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) | 1938-06-10 | 1938-12-10 | 1939-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-06-10 | 1942-12-10 | 1943-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-06-10 | 1946-12-10 | 1947-06-11 | $7700.00 | Window Closed / Lapsed |