US2050565A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Proportional fluid feeding device
Assignee: Standard Oil Company of California
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Filing: 1934-11-19
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Granted: 1936-08-11
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Expires: 1954-11-19
Abstract
No abstract record available.
Inventors
- 👤 Eldred E Edwards
- 👤 Joseph F Putnam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:49
CPC Classifications
C; C10; C10L; C10L3/00; C10L3/003; C10L3/006; G; G05; G05D; G05D11/00; G05D11/006; Y; Y10; Y10S; Y10S261/00; Y10S261/17; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2514; Y10T137/2521; Y10T137/2526; Y10T137/8593; Y10T137/86236; Y10T137/86252
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) | 1939-08-11 | 1940-02-10 | 1940-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-08-11 | 1944-02-10 | 1944-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-08-11 | 1948-02-10 | 1948-08-11 | $7700.00 | Window Closed / Lapsed |