Patent US2987118A successfully refreshed from Google Patents.
US2987118A
Expired / Lapsed
US
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Gas burner
Assignee: Whirlpool Corp
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Filing: 1958-03-06
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Granted: 1961-06-06
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Expires: 1978-03-06
Abstract
No abstract record available.
Inventors
- 👤 Gordon H Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:33
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/12; F23D14/16; F23D14/34; F23D14/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US323120A
Cited
US669448A
Cited
US1223308A
Cited
US1256301A
Cited
US1950800A
Cited
US2005252A
Cited
US2424154A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-05 | 1964-12-05 | 1965-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-05 | 1968-12-05 | 1969-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-05 | 1972-12-05 | 1973-06-06 | $7700.00 | Window Closed / Lapsed |