US2068138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for controlling the supply of fuel to oil burners, and the like
Assignee: AUTOMATIC PRODUCTS CO
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Filing: 1936-10-07
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Granted: 1937-01-19
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Expires: 1956-10-07
Abstract
No abstract record available.
Inventors
- 👤 Roy W Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:57
CPC Classifications
F; F23; F23D; F23D5/00; F23D5/12; F23D5/14; F24; F24C; F24C5/00; F24C5/16; F23N; F23N2239/00; F23N2239/06; Y; Y10; Y10T; Y10T137/00; Y10T137/1842; Y10T137/1939; Y10T137/1963; Y10T137/1987; Y10T137/7287; Y10T137/7297; Y10T137/7329; Y10T137/7358; Y10T137/7381; Y10T137/7394; Y10T137/7397; Y10T137/7404
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) | 1940-01-19 | 1940-07-20 | 1941-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-01-19 | 1944-07-20 | 1945-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-01-19 | 1948-07-20 | 1949-01-19 | $7700.00 | Window Closed / Lapsed |