Patent US2686765A successfully refreshed from Google Patents.
US3396715A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable combustion device for solid fuels
Assignee: Natural Resources Corp
•
Filing: 1966-01-14
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Granted: 1968-08-13
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Expires: 1986-01-14
Abstract
No abstract record available.
Inventors
- 👤 Chauncey D Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:22
CPC Classifications
A; A47; A47J; A47J37/00; A47J37/06; A47J37/07; A47J37/0704; A47J37/0709
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US131030A
Cited
US2513580A
Cited
US2866883A
Cited
US2940381A
Cited
US3060868A
Cited
US3134887A
Cited
US3191592A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-13 | 1972-02-12 | 1972-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-13 | 1976-02-12 | 1976-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-13 | 1980-02-12 | 1980-08-13 | $7700.00 | Window Closed / Lapsed |