Patent US1713710A successfully refreshed from Google Patents.
Patent US2729130A successfully refreshed from Google Patents.
US2729130A
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Universal step turning duplicator for lathes
Assignee: Individual
•
Filing: 1952-08-09
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Granted: 1956-01-03
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Expires: 1972-08-09
Abstract
No abstract record available.
Inventors
- 👤 Walker Curtis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:01
CPC Classifications
B; B23; B23Q; B23Q35/00; B23Q35/04; B23Q35/08; B23Q2735/00; B23Q2735/02; B23Q2735/025; Y; Y10; Y10T; Y10T82/00; Y10T82/14; Y10T82/141; Y10T82/147
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2603117A
Cited
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Cited
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Cited
US2645148A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-02 | 1959-07-04 | 1960-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-02 | 1963-07-04 | 1964-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-02 | 1967-07-04 | 1968-01-03 | $7700.00 | Window Closed / Lapsed |