Patent US2936894A successfully refreshed from Google Patents.
US2936894A
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US
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Centrifugal driving and suspension means
Assignee: Western States Machine Co
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Filing: 1954-04-06
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Granted: 1960-05-17
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Expires: 1974-04-06
Abstract
No abstract record available.
Inventors
- 👤 Hertrich Elise
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:35
CPC Classifications
B; B04; B04B; B04B9/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1734746A
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US1823863A
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US2219875A
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US2312505A
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US2303813A
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US2402496A
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US2544367A
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US2502021A
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DE903765C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-17 | 1963-11-16 | 1964-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-17 | 1967-11-16 | 1968-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-17 | 1971-11-16 | 1972-05-17 | $7700.00 | Window Closed / Lapsed |