Patent US1799587A successfully refreshed from Google Patents.
US1799587A
Expired / Lapsed
US
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Supply and relief valve
Assignee: SKY SPECIALTIES Corp
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Filing: 1927-11-30
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Granted: 1931-04-07
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Expires: 1947-11-30
Abstract
No abstract record available.
Inventors
- 👤 Charles F Heywood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:12
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/14; G05D16/18; F; F16; F16K; F16K15/00; F16K15/18; F16K15/184; F16K15/1843; F16K17/00; F16K17/02; F16K17/04; F16K17/06; F16K17/065; F16K31/00; F16K31/44; F16K31/60; F16K31/602; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2574; Y10T137/2605; Y10T137/2642; Y10T137/7722; Y10T137/7781; Y10T137/7837; Y10T137/7838; Y10T137/7842
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) | 1934-04-06 | 1934-10-06 | 1935-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-04-06 | 1938-10-06 | 1939-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-04-06 | 1942-10-06 | 1943-04-07 | $7700.00 | Window Closed / Lapsed |