US3035774A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve structure and system
Assignee: General Controls Co
•
Filing: 1959-03-31
•
Granted: 1962-05-22
•
Expires: 1979-03-31
Abstract
No abstract record available.
Inventors
- 👤 William A Ray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:44
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/36; F16K31/40; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87265; Y10T137/87499; Y10T137/87507
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US910092A
Cited
US1888449A
Cited
US2046882A
Cited
US2293947A
Cited
US2317639A
Cited
US2685411A
Cited
US2653768A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-21 | 1965-11-20 | 1966-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-21 | 1969-11-20 | 1970-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-21 | 1973-11-20 | 1974-05-22 | $7700.00 | Window Closed / Lapsed |