Patent US2645986A successfully refreshed from Google Patents.
US2645986A
Expired / Lapsed
US
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Gravel spreader
Assignee: Individual
•
Filing: 1948-07-09
•
Granted: 1953-07-21
•
Expires: 1968-07-09
Abstract
No abstract record available.
Inventors
- 👤 Martin R Rasmussen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:40
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/12; E01C19/15; E04; E04D; E04D15/00; E04D15/07
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1419537A
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US1641703A
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US1750104A
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US1746410A
Cited
US1885319A
Cited
GB422128A
Cited
GB427105A
Cited
US2197878A
Cited
US2507294A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-20 | 1957-01-19 | 1957-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-20 | 1961-01-19 | 1961-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-20 | 1965-01-19 | 1965-07-21 | $7700.00 | Window Closed / Lapsed |