US2665506A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ballast plow and distributor
Assignee: Individual
•
Filing: 1951-01-17
•
Granted: 1954-01-12
•
Expires: 1971-01-17
Abstract
No abstract record available.
Inventors
- 👤 Kershaw Royce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:27
CPC Classifications
E; E01; E01B; E01B27/00; E01B27/02; E01B27/023; E01B27/025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US96205A
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US394350A
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US533036A
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US748503A
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US1208809A
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US1441971A
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US1856148A
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US2140105A
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US2230704A
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US2298768A
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US2311551A
Cited
CH237746A
Cited
US2453723A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-11 | 1957-07-13 | 1958-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-11 | 1961-07-13 | 1962-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-11 | 1965-07-13 | 1966-01-12 | $7700.00 | Window Closed / Lapsed |