Patent US2515301A successfully refreshed from Google Patents.
US2515301A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas torch
Assignee: Airco Inc
•
Filing: 1945-08-10
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Granted: 1950-07-18
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Expires: 1965-08-10
Abstract
No abstract record available.
Inventors
- 👤 Howard G Hughey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:30
CPC Classifications
B; B23; B23K; B23K7/00; B23K7/06; F; F23; F23D; F23D14/00; F23D14/32; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86879
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB251091A
Cited
US2102040A
Cited
US2186096A
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US2199951A
Cited
US2228114A
Cited
US2257605A
Cited
US2392806A
Cited
US2309128A
Cited
US2447081A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-17 | 1954-01-16 | 1954-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-17 | 1958-01-16 | 1958-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-17 | 1962-01-16 | 1962-07-18 | $7700.00 | Window Closed / Lapsed |