US3465786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum check valve
Assignee: Gar Wood Industries Inc
•
Filing: 1966-09-08
•
Granted: 1969-09-09
•
Expires: 1986-09-08
Abstract
No abstract record available.
Inventors
- 👤 Edward G Spisak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:18
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/04; G05D16/06; G05D16/063; G05D16/0638; G05D16/0641; F; F16; F16K; F16K15/00; F16K15/14; F16K15/1402; F16K15/144; F16K51/00; F16K51/02; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7783; Y10T137/7837; Y10T137/7838; Y10T137/7839; Y10T137/784; Y10T137/7866; Y10T137/7867
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2370451A
Cited
US2604297A
Cited
US2705608A
Cited
US3011758A
Cited
US3022039A
Cited
US3084707A
Cited
US3139898A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-08 | 1973-03-10 | 1973-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-08 | 1977-03-10 | 1977-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-08 | 1981-03-10 | 1981-09-09 | $7700.00 | Window Closed / Lapsed |