US2403514A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for cutting metal along curved lines
Assignee: Airco Inc
•
Filing: 1943-09-10
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Granted: 1946-07-09
•
Expires: 1963-09-10
Abstract
No abstract record available.
Inventors
- 👤 James F Franzen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:38
CPC Classifications
B; B23; B23K; B23K7/00; B23K7/001; B23K7/002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1949-07-08 | 1950-01-07 | 1950-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-07-08 | 1954-01-07 | 1954-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-07-08 | 1958-01-07 | 1958-07-09 | $7700.00 | Window Closed / Lapsed |