Patent US2776850A successfully refreshed from Google Patents.
US2776850A
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Combined valve and coupling
Assignee: Aerojet Rocketdyne Inc
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Filing: 1952-08-16
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Granted: 1957-01-08
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Expires: 1972-08-16
Abstract
No abstract record available.
Inventors
- 👤 Carson E Hawk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 03:22
CPC Classifications
F; F16; F16K; F16K21/00; F16K21/04; F16K21/18; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87917; Y10T137/87925; Y10T137/87973
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2653832A
Cited
US783925A
Cited
US1052088A
Cited
FR770694A
Cited
DE657730C
Cited
US2452256A
Cited
US2462512A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-08 | 1960-07-09 | 1961-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-08 | 1964-07-09 | 1965-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-08 | 1968-07-09 | 1969-01-08 | $7700.00 | Window Closed / Lapsed |