Patent US2768675A successfully refreshed from Google Patents.
US2768675A
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Temperature responsive apparatus for operating an oil burning system
Assignee: Canadian Patents and Development Ltd
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Filing: 1953-07-27
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Granted: 1956-10-30
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Expires: 1973-07-27
Abstract
No abstract record available.
Inventors
- 👤 Hugh G Conn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:31
CPC Classifications
F; F24; F24H; F24H9/00; F24H9/20; F23; F23N; F23N2225/00; F23N2225/08; F23N2225/12; F23N2233/00; F23N2233/06; F23N2235/00; F23N2235/02; F23N2235/06; F23N2235/10; F23N2239/00; F23N2239/06; F23N2241/00; F23N2241/02; F23N5/00; F23N5/02; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86236
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1655246A
Cited
US1654658A
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US1583238A
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US2367038A
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US2585431A
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US2698744A
Cited
US2685917A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-30 | 1960-04-30 | 1960-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-30 | 1964-04-30 | 1964-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-30 | 1968-04-30 | 1968-10-30 | $7700.00 | Window Closed / Lapsed |