US1817127A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unloading valve
Assignee: WILLIAM H BLAKLEY
•
Filing: 1930-11-19
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Granted: 1931-08-04
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Expires: 1950-11-19
Abstract
No abstract record available.
Inventors
- 👤 Thomas E Crockett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:15
CPC Classifications
F; F16; F16K; F16K17/00; F16K15/00; F16K15/02; F16K15/04; F16K15/044; F16K15/046; F16K17/02; F16K17/04; F16K17/0406; F16K2200/00; F16K2200/30; F16K2200/305; F16K2200/3052; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2544; Y10T137/2557; Y10T137/7722; Y10T137/7837; Y10T137/7838; Y10T137/7842; Y10T137/7845; Y10T137/7846; Y10T137/7904; Y10T137/7922; Y10T137/7927
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) | 1934-08-03 | 1935-02-02 | 1935-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-08-03 | 1939-02-02 | 1939-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-08-03 | 1943-02-02 | 1943-08-04 | $7700.00 | Window Closed / Lapsed |