Patent US2823447A successfully refreshed from Google Patents.
US2823447A
Expired / Lapsed
US
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Vertical ejector tool holder
Assignee: Individual
•
Filing: 1953-07-27
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Granted: 1958-02-18
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Expires: 1973-07-27
Abstract
No abstract record available.
Inventors
- 👤 Doerseln Paul
- 👤 Doerseln Kenneth Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:35
CPC Classifications
B; B23; B23B; B23B27/00; B23B27/14; B23B27/16; B23B27/22; Y; Y10; Y10T; Y10T407/00; Y10T407/22; Y10T407/2222; Y10T407/2238; Y10T407/224; Y10T407/2242; Y10T407/225; Y10T407/227
Claims Analysis
Total Claims: 0
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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) | 1961-02-17 | 1961-08-19 | 1962-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-17 | 1965-08-19 | 1966-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-17 | 1969-08-19 | 1970-02-18 | $7700.00 | Window Closed / Lapsed |