US2491440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for flame-cutting metal
Assignee: Bastian Blessing Co
•
Filing: 1947-02-05
•
Granted: 1949-12-13
•
Expires: 1967-02-05
Abstract
No abstract record available.
Inventors
- 👤 Woodrow S Boedecker
- 👤 Lansing M Hinrichs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:42
CPC Classifications
B; B23; B23K; B23K7/00; B23K7/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1606013A
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DE549781C
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US968350A
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US1178551A
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US2181095A
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US2210402A
Cited
US2367316A
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US2286191A
Cited
US2286591A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-12 | 1953-06-13 | 1953-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-12 | 1957-06-13 | 1957-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-12 | 1961-06-13 | 1961-12-13 | $7700.00 | Window Closed / Lapsed |