US2812595A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Earth moving apparatus
Assignee: DROTT Manufacturing CORP
•
Filing: 1954-01-15
•
Granted: 1957-11-12
•
Expires: 1974-01-15
Abstract
No abstract record available.
Inventors
- 👤 Albert B Houghton
- 👤 Milton C Drott
- 👤 John W Drott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:41
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/28; E02F3/36; E02F3/40; E02F3/401; E02F3/413; E02F3/4133; Y; Y10; Y10S; Y10S37/00; Y10S37/906
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1263790A
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US1929004A
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US2326338A
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US2489898A
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US2455474A
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US2418251A
Cited
US2529208A
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US2470779A
Cited
US2668631A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-11 | 1961-05-13 | 1961-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-11 | 1965-05-13 | 1965-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-11 | 1969-05-13 | 1969-11-12 | $7700.00 | Window Closed / Lapsed |