US2741074A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine tools
Assignee: Individual
•
Filing: 1954-07-14
•
Granted: 1956-04-10
•
Expires: 1974-07-14
Abstract
No abstract record available.
Inventors
- 👤 John F Kopczynski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:40
CPC Classifications
B; B24; B24B; B24B5/00; B24B5/35
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US427288A
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US638437A
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US1493836A
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US2000526A
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US2060785A
Cited
US2025881A
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US2351881A
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US2411972A
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US2544318A
Cited
US2701433A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-10 | 1959-10-10 | 1960-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-10 | 1963-10-10 | 1964-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-10 | 1967-10-10 | 1968-04-10 | $7700.00 | Window Closed / Lapsed |