US2805652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water level responsive controls for combustion apparatus
Assignee: Individual
•
Filing: 1953-05-01
•
Granted: 1957-09-10
•
Expires: 1973-05-01
Abstract
No abstract record available.
Inventors
- 👤 Minor W Stout
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:30
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/02; F23N5/08; F23N5/082; F23N5/24; F23N5/242; G; G01; G01F; G01F23/00; G01F23/30; G01F23/64; G01F23/68; G01F23/70; G01F23/706; G05; G05D; G05D9/00; G05D9/12; F23N2227/00; F23N2227/36; F23N2231/00; F23N2231/06; F23N2231/08
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-09 | 1961-03-11 | 1961-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-09 | 1965-03-11 | 1965-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-09 | 1969-03-11 | 1969-09-10 | $7700.00 | Window Closed / Lapsed |