Patent US2800765A successfully refreshed from Google Patents.
US2800765A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Movable flame holder for combustion apparatus
Assignee: Westinghouse Electric Corp
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Filing: 1947-08-27
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Granted: 1957-07-30
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Expires: 1967-08-27
Abstract
No abstract record available.
Inventors
- 👤 Ralph T French
- 👤 Walter D Pouchot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:19
CPC Classifications
F; F23; F23R; F23R3/00; F23R3/02; F23R3/16; F23R3/18; F23R3/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1336261A
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US1524294A
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US2181261A
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US2296023A
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US2346815A
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US2409176A
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US2526122A
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US2707372A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-29 | 1961-01-28 | 1961-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-29 | 1965-01-28 | 1965-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-29 | 1969-01-28 | 1969-07-30 | $7700.00 | Window Closed / Lapsed |