Patent US3545335A successfully refreshed from Google Patents.
US3545335A
Expired / Lapsed
US
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Spindle clamp
Assignee: Carlton Machine Tool Co
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Filing: 1968-12-05
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Granted: 1970-12-08
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Expires: 1988-12-05
Abstract
No abstract record available.
Inventors
- 👤 Robert A Lehmkuhl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:19
CPC Classifications
B; B23; B23Q; B23Q1/00; B23Q1/25; B23Q1/26; B23Q1/28; B23Q1/70; Y; Y10; Y10T; Y10T408/00; Y10T408/65; Y10T408/66; Y10T409/00; Y10T409/30; Y10T409/309352; Y10T409/309576; Y10T409/309912
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-07 | 1974-06-08 | 1974-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-07 | 1978-06-08 | 1978-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-07 | 1982-06-08 | 1982-12-08 | $7700.00 | Window Closed / Lapsed |