Patent US2646725A successfully refreshed from Google Patents.
US2646725A
Expired / Lapsed
US
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Three-dimensional duplicating engraving or milling machine
Assignee: Individual
•
Filing: 1949-11-29
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Granted: 1953-07-28
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Expires: 1969-11-29
Abstract
No abstract record available.
Inventors
- 👤 Brynildsrud Finn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:31
CPC Classifications
B; B23; B23Q; B23Q35/00; B23Q35/04; B23Q35/08; B23Q35/10; B23Q35/101; B23Q35/102; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/30084; Y10T409/301176; Y10T409/301624; Y10T409/30252
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US782242A
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US972033A
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US1874810A
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US1960757A
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US2182551A
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US2244190A
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US2207786A
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GB523743A
Cited
US2349171A
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US2303956A
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US2311943A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-27 | 1957-01-26 | 1957-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-27 | 1961-01-26 | 1961-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-27 | 1965-01-26 | 1965-07-28 | $7700.00 | Window Closed / Lapsed |