Patent US2138125A successfully refreshed from Google Patents.
US2138125A
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Control valve
Assignee: UNITED STATES AIR COMPRESSOR Co
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Filing: 1936-11-02
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Granted: 1938-11-29
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Expires: 1956-11-02
Abstract
No abstract record available.
Inventors
- 👤 Paul I Schultz
- 👤 James J Pelouch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:43
CPC Classifications
F; F16; F16K; F16K21/00; F16K21/04; F16K15/00; F16K15/02; F16K15/04; F16K15/044; F16K15/046; F16K15/18; F16K15/182; F16K2200/00; F16K2200/30; F16K2200/305; F16K2200/3053; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7876; Y10T137/7904; Y10T137/7922; Y10T137/7929; Y10T137/7931
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) | 1941-11-28 | 1942-05-30 | 1942-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-11-28 | 1946-05-30 | 1946-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-11-28 | 1950-05-30 | 1950-11-29 | $7700.00 | Window Closed / Lapsed |