Patent US4696902A successfully refreshed from Google Patents.
Patent US2239986A successfully refreshed from Google Patents.
US2239986A
Expired / Lapsed
US
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Mounting for rotary tool spindles and the like
Assignee: Heald Machine Co
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Filing: 1938-09-02
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Granted: 1941-04-29
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Expires: 1958-09-02
Abstract
No abstract record available.
Inventors
- 👤 Harold L Blood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:51
CPC Classifications
B; B23; B23Q; B23Q1/00; B23Q1/70; B24; B24B; B24B41/00; B24B41/04; Y; Y10; Y10T; Y10T407/00; Y10T407/19; Y10T407/1906; Y10T407/1928; Y10T407/193
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) | 1944-04-28 | 1944-10-28 | 1945-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-04-28 | 1948-10-28 | 1949-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-04-28 | 1952-10-28 | 1953-04-29 | $7700.00 | Window Closed / Lapsed |