Patent US3526027A successfully refreshed from Google Patents.
Patent US3542528A successfully refreshed from Google Patents.
US3542528A
Expired / Lapsed
US
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End mill with variable cutting diameter
Assignee: Individual
•
Filing: 1968-03-29
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Granted: 1970-11-24
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Expires: 1988-03-29
Abstract
No abstract record available.
Inventors
- 👤 Jorgen Bech
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:58
CPC Classifications
B; B23; B23B; B23B29/00; B23B29/03; B23B29/034; B23B29/03403; B23B29/03421; Y; Y10; Y10T; Y10T407/00; Y10T407/19; Y10T407/1906; Y10T407/1908; Y10T407/1912; Y10T407/1914; Y10T407/192; Y10T407/1932; Y10T407/22; Y10T407/2222; Y10T407/2244; Y10T407/2246; Y10T408/00; Y10T408/83; Y10T408/85; Y10T408/858
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3019712A
Cited
US3046845A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-23 | 1974-05-25 | 1974-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-23 | 1978-05-25 | 1978-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-23 | 1982-05-25 | 1982-11-24 | $7700.00 | Window Closed / Lapsed |