US2583185A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rapid operating poppet air valve
Assignee: SOPHIA LOUISE BRUSSEL AND
•
Filing: 1945-05-22
•
Granted: 1952-01-22
•
Expires: 1965-05-22
Abstract
No abstract record available.
Inventors
- 👤 Roy D Mcleod
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:32
CPC Classifications
F; F01; F01B; F01B17/00; F01B17/02; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87169; Y10T137/87193; Y10T137/87201; Y10T137/87209
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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Cited
US1777128A
Cited
GB356133A
Cited
US1835734A
Cited
US1930557A
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US2243937A
Cited
US2376918A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-21 | 1955-07-23 | 1956-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-21 | 1959-07-23 | 1960-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-21 | 1963-07-23 | 1964-01-22 | $7700.00 | Window Closed / Lapsed |