Patent US5296162A successfully refreshed from Google Patents.
Patent US1685286A successfully refreshed from Google Patents.
US1685286A
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Fluid-pressure-control valve
Assignee: NAT REGULATOR Co
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Filing: 1921-11-07
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Granted: 1928-09-25
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Expires: 1941-11-07
Abstract
No abstract record available.
Inventors
- 👤 John M Larson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:03
CPC Classifications
F; F16; F16K; F16K3/00; F16K3/22; F16K3/24; G; G05; G05D; G05D16/00; G05D16/14; G05D16/18; F16K3/30; F16K3/34; F16K31/00; F16K31/44; F16K31/52; F16K31/523; Y; Y10; Y10T; Y10T137/00; Y10T137/8158; Y10T137/8225; Y10T137/8275; Y10T137/8292; Y10T137/8593; Y10T137/86493; Y10T137/86718; Y10T137/86734; Y10T137/86759; Y10T137/86767; Y10T137/86783; Y10T137/86928; Y10T137/87153; Y10T137/87161
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1931-09-25 | 1932-03-26 | 1932-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-09-25 | 1936-03-26 | 1936-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-09-25 | 1940-03-26 | 1940-09-25 | $7700.00 | Window Closed / Lapsed |