US3069820A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grinding attachment for sod cutting machine
Assignee: FEDERAL AIRCRAFT WORKS Inc
•
Filing: 1959-10-26
•
Granted: 1962-12-25
•
Expires: 1979-10-26
Abstract
No abstract record available.
Inventors
- 👤 Francis J Ditter
- 👤 Jr William C Kaercher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:47
CPC Classifications
B; B24; B24B; B24B3/00; B24B3/36; B24B3/368; A; A01; A01G; A01G20/00; A01G20/10; A01G20/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US753630A
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US939115A
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US1432402A
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US2597325A
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US2879633A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-24 | 1966-06-25 | 1966-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-24 | 1970-06-25 | 1970-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-24 | 1974-06-25 | 1974-12-25 | $7700.00 | Window Closed / Lapsed |