US2500344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil burner apparatus
Assignee: HARVEY WHIPPLE Inc
•
Filing: 1946-06-03
•
Granted: 1950-03-14
•
Expires: 1966-06-03
Abstract
No abstract record available.
Inventors
- 👤 Carter George Irving
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:47
CPC Classifications
F; F23; F23C; F23C99/00; F23C2700/00; F23C2700/02; F23C2700/023
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE462547C
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US1997377A
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GB408030A
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US2120387A
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US2123950A
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US2262525A
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US2374203A
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US2433317A
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US2456930A
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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) | 1953-03-13 | 1953-09-12 | 1954-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-13 | 1957-09-12 | 1958-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-13 | 1961-09-12 | 1962-03-14 | $7700.00 | Window Closed / Lapsed |