US3015261A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trench filling and shoulder spreading machine
Assignee: Ulrich Manufacturing Co
•
Filing: 1958-04-25
•
Granted: 1962-01-02
•
Expires: 1978-04-25
Abstract
No abstract record available.
Inventors
- 👤 Raymore D Macdonald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:05
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/76; E02F3/7663; E02F3/7686; E01; E01C; E01C19/00; E01C19/12; E01C19/15; E01C19/18; E01C19/185
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2251095A
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US2303486A
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US2572776A
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US2660937A
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US2659988A
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US2752832A
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US2888864A
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US2848930A
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US2847772A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-01 | 1965-07-03 | 1966-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-01 | 1969-07-03 | 1970-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-01 | 1973-07-03 | 1974-01-02 | $7700.00 | Window Closed / Lapsed |