US2473192A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coil for weed burners and pear burners
Assignee: Individual
•
Filing: 1945-08-13
•
Granted: 1949-06-14
•
Expires: 1965-08-13
Abstract
No abstract record available.
Inventors
- 👤 John B Blackwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:46
CPC Classifications
A; A01; A01M; A01M15/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US593516A
Cited
US1563427A
Cited
US745799A
Cited
US638650A
Cited
US657036A
Cited
GB190215255A
Cited
US913611A
Cited
US1524832A
Cited
US1676352A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-13 | 1952-12-13 | 1953-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-13 | 1956-12-13 | 1957-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-13 | 1960-12-13 | 1961-06-14 | $7700.00 | Window Closed / Lapsed |