US3443399A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High speed universal spindle for a grinding machine
Assignee: HALL TOLEDO CORP
•
Filing: 1966-10-28
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Granted: 1969-05-13
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Expires: 1986-10-28
Abstract
No abstract record available.
Inventors
- 👤 Joseph I Pope
- 👤 Paul E Rickert
- 👤 Robert R Wilkinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:00
CPC Classifications
B; B24; B24B; B24B15/00; B24B41/00; B24B41/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1774701A
Cited
US1868540A
Cited
US2455870A
Cited
US2466359A
Cited
US2570335A
Cited
US3106804A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-12 | 1972-11-11 | 1973-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-12 | 1976-11-11 | 1977-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-12 | 1980-11-11 | 1981-05-13 | $7700.00 | Window Closed / Lapsed |