Patent US1671104A successfully refreshed from Google Patents.
US2553984A
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Electric duplicator attachment for lathes
Assignee: RK Le Blond Machine Tool Co
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Filing: 1947-06-24
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Granted: 1951-05-22
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Expires: 1967-06-24
Abstract
No abstract record available.
Inventors
- 👤 Harold J Siekmann
- 👤 Harry C Kemper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:58
CPC Classifications
B; B23; B23Q; B23Q35/00; B23Q35/04; B23Q35/08; B23Q35/12; B23Q2735/00; B23Q2735/02; B23Q2735/06; B23Q2735/062; Y; Y10; Y10T; Y10T82/00; Y10T82/14; Y10T82/141; Y10T82/143; Y10T82/25; Y10T82/2531; Y10T82/2541
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1477186A
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US1711290A
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US2065933A
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US2351649A
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US2330354A
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US2376405A
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US2437570A
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US2474134A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-21 | 1954-11-20 | 1955-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-21 | 1958-11-20 | 1959-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-21 | 1962-11-20 | 1963-05-22 | $7700.00 | Window Closed / Lapsed |