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Patent US2473559A successfully refreshed from Google Patents.
US2473559A
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US
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Apparatus for cutting tubes
Assignee: Airco Inc
•
Filing: 1942-04-22
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Granted: 1949-06-21
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Expires: 1962-04-22
Abstract
No abstract record available.
Inventors
- 👤 James L Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:24
CPC Classifications
B; B23; B23D; B23D45/00; B23D45/18; B23D45/20; B23D36/00; B23D36/0008; Y; Y10; Y10T; Y10T83/00; Y10T83/465; Y10T83/4714; Y10T83/4757; Y10T83/869; Y10T83/8696; Y10T83/87
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) | 1952-06-20 | 1952-12-20 | 1953-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-20 | 1956-12-20 | 1957-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-20 | 1960-12-20 | 1961-06-21 | $7700.00 | Window Closed / Lapsed |