Patent US3522693A successfully refreshed from Google Patents.
US3522693A
Expired / Lapsed
US
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Bearing guard with stationary and rotatable knife members
Assignee: Case LLC
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Filing: 1968-08-12
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Granted: 1970-08-04
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Expires: 1988-08-12
Abstract
No abstract record available.
Inventors
- 👤 William H Knapp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:41
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/54; A; A01; A01B; A01B71/00; A01B71/04; A01D; A01D75/00; A01D75/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-03 | 1974-02-02 | 1974-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-03 | 1978-02-02 | 1978-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-03 | 1982-02-02 | 1982-08-04 | $7700.00 | Window Closed / Lapsed |