US2991805A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic valves
Assignee: Royal Mcbee Corp
•
Filing: 1958-01-07
•
Granted: 1961-07-11
•
Expires: 1978-01-07
Abstract
No abstract record available.
Inventors
- 👤 Paul F Page
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:12
CPC Classifications
F; F15; F15B; F15B13/00; F15B13/02; F15B13/04; F15B13/042; F15C; F15C3/00; F15C3/04; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/8667; Y10T137/86686
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2598361A
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US2670035A
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US2641281A
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US2669249A
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US2652847A
Cited
US2847182A
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US2737272A
Cited
US2860651A
Cited
US2836194A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-10 | 1965-01-09 | 1965-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-10 | 1969-01-09 | 1969-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-10 | 1973-01-09 | 1973-07-11 | $7700.00 | Window Closed / Lapsed |