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Patent US3055274A successfully refreshed from Google Patents.
US3055274A
Expired / Lapsed
US
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Hydraulic tracers or duplicators for machine tools
Assignee: Individual
•
Filing: 1959-11-03
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Granted: 1962-09-25
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Expires: 1979-11-03
Abstract
No abstract record available.
Inventors
- 👤 Armytage Frederick William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:04
CPC Classifications
B; B23; B23Q; B23Q35/00; B23Q2735/00; B23Q2735/008; Y; Y10; Y10T; Y10T409/00; Y10T409/50; Y10T409/500164; Y10T409/500328
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2549024A
Cited
US2933985A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-24 | 1966-03-26 | 1966-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-24 | 1970-03-26 | 1970-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-24 | 1974-03-26 | 1974-09-25 | $7700.00 | Window Closed / Lapsed |