Patent US3464737A successfully refreshed from Google Patents.
US3464737A
Expired / Lapsed
US
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Road grooving apparatus
Assignee: Robert G Evans Co
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Filing: 1967-09-11
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Granted: 1969-09-02
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Expires: 1987-09-11
Abstract
No abstract record available.
Inventors
- 👤 Victor H Haase
- 👤 John R Harclerode
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:32
CPC Classifications
E; E01; E01C; E01C23/00; E01C23/06; E01C23/08; E01C23/085; E01C23/088; B; B27; B27B; B27B5/00; B27B5/29; B27B5/30; B27B5/34; B28; B28D; B28D1/00; B28D1/02; B28D1/04; B28D1/045
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) | 1972-09-01 | 1973-03-03 | 1973-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-01 | 1977-03-03 | 1977-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-01 | 1981-03-03 | 1981-09-02 | $7700.00 | Window Closed / Lapsed |