US1704513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve mechanism for air pumps and the like
Assignee: Quincy Compressor LLC
•
Filing: 1923-02-03
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Granted: 1929-03-05
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Expires: 1943-02-03
Abstract
No abstract record available.
Inventors
- 👤 George F Pfeifer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:36
CPC Classifications
F; F04; F04B; F04B39/00; F04B39/10; F04B39/102; F04B39/1033; F16; F16K; F16K15/00; F16K15/02; F16K15/06; F16K15/063; F16K15/066; F16K17/00; F16K17/02; F16K17/04; F16K17/0413; F16K2200/00; F16K2200/30; F16K2200/301; F16K2200/305; F16K2200/3053; Y; Y10; Y10T; Y10T137/00; Y10T137/7504; Y10T137/7559; Y10T137/7722; Y10T137/7837; Y10T137/7838; Y10T137/7859; Y10T137/786; Y10T137/7861; Y10T137/7862; Y10T137/7865
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) | 1932-03-04 | 1932-09-03 | 1933-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1936-03-04 | 1936-09-03 | 1937-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1940-03-04 | 1940-09-03 | 1941-03-05 | $7700.00 | Window Closed / Lapsed |