US2738196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sand spreader
Assignee: UNDERWOOD MACHINERY Co
•
Filing: 1951-02-17
•
Granted: 1956-03-13
•
Expires: 1971-02-17
Abstract
No abstract record available.
Inventors
- 👤 Frank E Underwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:03
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/12; E01C19/20; E01C19/201; E01C19/202; E01C19/2025; E01C2019/2055; E01C2019/207; E01C2019/2075
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1000004A
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US1440429A
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US2200165A
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US2303876A
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US2281212A
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US2430020A
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GB560687A
Cited
US2487552A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-13 | 1959-09-12 | 1960-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-13 | 1963-09-12 | 1964-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-13 | 1967-09-12 | 1968-03-13 | $7700.00 | Window Closed / Lapsed |