US2978967A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Road roller
Assignee: HARRY J SEAMAN
•
Filing: 1956-12-24
•
Granted: 1961-04-11
•
Expires: 1976-12-24
Abstract
No abstract record available.
Inventors
- 👤 Raymore D Macdonald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:44
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/22; E01C19/23; E01C19/27; E01C19/26; E01C19/266
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US811909A
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US941770A
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US1458751A
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US1510356A
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US1738490A
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US1938142A
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US1996140A
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US1913822A
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US2039489A
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US2030311A
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DE679003C
Cited
US2443147A
Cited
US2466822A
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US2559427A
Cited
FR1007547A
Cited
DE912700C
Cited
US2696770A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-10 | 1964-10-10 | 1965-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-10 | 1968-10-10 | 1969-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-10 | 1972-10-10 | 1973-04-11 | $7700.00 | Window Closed / Lapsed |