Patent US2622548A successfully refreshed from Google Patents.
US2622548A
Expired / Lapsed
US
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Flux powder control for flame cutting
Assignee: National Cylinder Gas Co
•
Filing: 1947-12-09
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Granted: 1952-12-23
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Expires: 1967-12-09
Abstract
No abstract record available.
Inventors
- 👤 Alfred F Chouinard
- 👤 John F Dove
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:49
CPC Classifications
B; B23; B23K; B23K7/00; B23K7/08; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2703
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-23 | 1956-06-23 | 1956-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-23 | 1960-06-23 | 1960-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-23 | 1964-06-23 | 1964-12-23 | $7700.00 | Window Closed / Lapsed |