US2654422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combustion heating apparatus and controls therefor
Assignee: Individual
•
Filing: 1949-09-10
•
Granted: 1953-10-06
•
Expires: 1969-09-10
Abstract
No abstract record available.
Inventors
- 👤 Fred B Aubert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:51
CPC Classifications
B; B64; B64D; B64D13/00; B64D13/06; B64D13/08; F; F24; F24C; F24C3/00; F24C3/12; Y; Y02; Y02T; Y02T50/00; Y02T50/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1562663A
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US1583238A
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US1835611A
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US2400117A
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US2418566A
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US2428078A
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US2410537A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-05 | 1957-04-06 | 1957-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-05 | 1961-04-06 | 1961-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-05 | 1965-04-06 | 1965-10-06 | $7700.00 | Window Closed / Lapsed |