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Patent US3219797A successfully refreshed from Google Patents.
US3219797A
Expired / Lapsed
US
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Hot air torch
Assignee: Individual
•
Filing: 1963-09-24
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Granted: 1965-11-23
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Expires: 1983-09-24
Abstract
No abstract record available.
Inventors
- 👤 Brady William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:53
CPC Classifications
F; F24; F24H; F24H3/00; F24H3/02; F24H3/04; F24H3/0405; F24H3/0423
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US981641A
Cited
US1777744A
Cited
US1869737A
Cited
US2049812A
Cited
US2021955A
Cited
US2114494A
Cited
US2209086A
Cited
US2470181A
Cited
US2658798A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |