Patent US3526047A successfully refreshed from Google Patents.
US3526047A
Expired / Lapsed
US
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Ditching machine having vertically adjustable wheels
Assignee: KENNETH P GOLTZ
•
Filing: 1967-10-09
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Granted: 1970-09-01
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Expires: 1987-10-09
Abstract
No abstract record available.
Inventors
- 👤 Edmund Roessler
- 👤 Kenneth P Goltz
- 👤 Martin M Medllin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:13
CPC Classifications
E; E02; E02F; E02F5/00; E02F5/02; E02F9/00; E02F9/08; E02F9/085; Y; Y10; Y10S; Y10S37/00; Y10S37/907
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2767995A
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US2920636A
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US2872200A
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US2900931A
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US2965987A
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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) | 1973-08-31 | 1974-03-02 | 1974-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-31 | 1978-03-02 | 1978-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-31 | 1982-03-02 | 1982-09-01 | $7700.00 | Window Closed / Lapsed |