US2680607A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe-cutting machine
Assignee: Central Iron & Steel Co
•
Filing: 1950-10-16
•
Granted: 1954-06-08
•
Expires: 1970-10-16
Abstract
No abstract record available.
Inventors
- 👤 Hollinger Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:30
CPC Classifications
B; B23; B23K; B23K7/00; B23K7/005; B23K7/006
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1774000A
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US1963537A
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AT135962B
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US1954549A
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US2089840A
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US2138676A
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US2148780A
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US2189203A
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US2295182A
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US2481421A
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US2500204A
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US2495360A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-06-07 | 1957-12-07 | 1958-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-06-07 | 1961-12-07 | 1962-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-06-07 | 1965-12-07 | 1966-06-08 | $7700.00 | Window Closed / Lapsed |