US2531006A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tip for cutting blowtorches
Assignee: Smith Welding Equipment Corp
•
Filing: 1946-12-30
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Granted: 1950-11-21
•
Expires: 1966-12-30
Abstract
No abstract record available.
Inventors
- 👤 Elmer H Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:45
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/46; F23D14/48; F23D14/52; F23D14/54; F23D14/38; F23D14/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1726327A
Cited
US1949780A
Cited
US1977782A
Cited
US2175160A
Cited
FR825503A
Cited
GB540880A
Cited
US2378346A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-20 | 1954-05-22 | 1954-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-20 | 1958-05-22 | 1958-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-20 | 1962-05-22 | 1962-11-21 | $7700.00 | Window Closed / Lapsed |