US3035360A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ditcher apparatus
Assignee: ATLAS SCRAPER AND ENGINEERING
•
Filing: 1961-02-24
•
Granted: 1962-05-22
•
Expires: 1981-02-24
Abstract
No abstract record available.
Inventors
- 👤 Kenneth E Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:13
CPC Classifications
E; E02; E02F; E02F5/00; E02F5/02; E02F5/027
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1460839A
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US2280014A
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US2830519A
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US2955369A
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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) | 1965-05-21 | 1965-11-20 | 1966-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-21 | 1969-11-20 | 1970-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-21 | 1973-11-20 | 1974-05-22 | $7700.00 | Window Closed / Lapsed |