US2792138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Earth handling machine
Assignee: Individual
•
Filing: 1953-12-30
•
Granted: 1957-05-14
•
Expires: 1973-12-30
Abstract
No abstract record available.
Inventors
- 👤 Walter C Olson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:36
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/28; E02F3/30; E02F3/32; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20012
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1722585A
Cited
US1823137A
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US2224725A
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US2418299A
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US2625280A
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GB613190A
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US2468201A
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US2648231A
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US2698697A
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US2678140A
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US2674500A
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GB667798A
Cited
US2676719A
Cited
US2702137A
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US2700904A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-05-13 | 1960-11-12 | 1961-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-13 | 1964-11-12 | 1965-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-13 | 1968-11-12 | 1969-05-14 | $7700.00 | Window Closed / Lapsed |