US2842192A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil burner control
Assignee: Penn Controls Inc
•
Filing: 1955-08-22
•
Granted: 1958-07-08
•
Expires: 1975-08-22
Abstract
No abstract record available.
Inventors
- 👤 Ralph S Penn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:39
CPC Classifications
F; F24; F24H; F24H9/00; F24H9/20; F24H9/2007; F24H9/2035
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2212255A
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US2388666A
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US2355309A
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US2385426A
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US2384372A
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US2558658A
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US2550507A
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US2696874A
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US2681101A
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US2743768A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-07 | 1962-01-06 | 1962-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-07 | 1966-01-06 | 1966-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-07 | 1970-01-06 | 1970-07-08 | $7700.00 | Window Closed / Lapsed |