US2930398A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High capacity combination regulator and check valve
Assignee: GRAND VALLEY MACHINE AND TOOL CO
•
Filing: 1955-10-24
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Granted: 1960-03-29
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Expires: 1975-10-24
Abstract
No abstract record available.
Inventors
- 👤 Cedric A Barrett
- 👤 John P Kingsbury
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:02
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/02; F16K17/168; F15; F15B; F15B11/00; F15B11/02; G; G05; G05D; G05D16/00; G05D16/14; G05D16/16; G05D16/166; F15B2211/00; F15B2211/50; F15B2211/505; F15B2211/50563; F15B2211/50581; F15B2211/60; F15B2211/635; F15B2211/6355; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7758; Y10T137/7762; Y10T137/7764; Y10T137/7771; Y10T137/7779
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2732851A
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US1583834A
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US1757738A
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US2604327A
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US2619111A
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US2642887A
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US2661763A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-29 | 1963-09-28 | 1964-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-29 | 1967-09-28 | 1968-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-29 | 1971-09-28 | 1972-03-29 | $7700.00 | Window Closed / Lapsed |