Patent US2867272A successfully refreshed from Google Patents.
US2867272A
Expired / Lapsed
US
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Gas burner
Assignee: Whirlpool Corp
•
Filing: 1954-05-19
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Granted: 1959-01-06
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Expires: 1974-05-19
Abstract
No abstract record available.
Inventors
- 👤 Harold E Morrison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:08
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/46; F23D14/84
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1320108A
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US1158652A
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US1192550A
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US1364094A
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US1707451A
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US2149182A
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US2485058A
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US2731009A
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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) | 1962-01-05 | 1962-07-07 | 1963-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-05 | 1966-07-07 | 1967-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-05 | 1970-07-07 | 1971-01-06 | $7700.00 | Window Closed / Lapsed |