US2894341A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Digging machine
Assignee: Individual
•
Filing: 1953-10-05
•
Granted: 1959-07-14
•
Expires: 1973-10-05
Abstract
No abstract record available.
Inventors
- 👤 William M Amthor
- 👤 Kosuga Vincent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:14
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/18; E02F3/181; E02F3/22; E02F3/24; E02F7/00; E02F7/02; Y; Y10; Y10S; Y10S37/00; Y10S37/902
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1877556A
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US1974190A
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US2256719A
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US2329659A
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US2321352A
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US2488016A
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US2421904A
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US2652641A
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US2598339A
Cited
US2709859A
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US2681231A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-07-13 | 1963-01-12 | 1963-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-13 | 1967-01-12 | 1967-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-13 | 1971-01-12 | 1971-07-14 | $7700.00 | Window Closed / Lapsed |