US2040964A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unloader valve for fluid compressors
Assignee: Westinghouse Electric Corp
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Filing: 1932-10-28
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Granted: 1936-05-19
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Expires: 1952-10-28
Abstract
No abstract record available.
Inventors
- 👤 Frederic L Tarleton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:22
CPC Classifications
F; F04; F04B; F04B49/00; F04B49/22; F04B49/24; F04B49/06; F25; F25B; F25B2600/00; F25B2600/02; F25B2600/026; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2574; Y10T137/2605; Y10T137/8593; Y10T137/85978; Y10T137/86171
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) | 1939-05-19 | 1939-11-18 | 1940-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-05-19 | 1943-11-18 | 1944-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-05-19 | 1947-11-18 | 1948-05-19 | $7700.00 | Window Closed / Lapsed |