US2995902A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plow machine for laying material underground
Assignee: Individual
•
Filing: 1958-11-06
•
Granted: 1961-08-15
•
Expires: 1978-11-06
Abstract
No abstract record available.
Inventors
- 👤 Robert N Wheeler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:48
CPC Classifications
E; E02; E02F; E02F5/00; E02F5/02; E02F5/10; E02F5/102
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3436A
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US1854617A
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US1863671A
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US2067717A
Cited
US2118553A
Cited
US2259303A
Cited
US2254324A
Cited
US2647758A
Cited
DE952573C
Cited
FR1145475A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-14 | 1965-02-13 | 1965-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-14 | 1969-02-13 | 1969-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-14 | 1973-02-13 | 1973-08-15 | $7700.00 | Window Closed / Lapsed |