Patent US2869159A successfully refreshed from Google Patents.
US2869159A
Expired / Lapsed
US
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Railroad track sweeper
Assignee: Kershaw Manufacturing Co Inc
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Filing: 1955-02-09
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Granted: 1959-01-20
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Expires: 1975-02-09
Abstract
No abstract record available.
Inventors
- 👤 Kershaw Royce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:52
CPC Classifications
E; E01; E01B; E01B27/00; E01B27/02; E01B27/023; E01B27/026
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US525075A
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US554732A
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US1495095A
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US935821A
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US972058A
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US1238855A
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US1286481A
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US2248012A
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US2727263A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-19 | 1962-07-21 | 1963-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-19 | 1966-07-21 | 1967-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-19 | 1970-07-21 | 1971-01-20 | $7700.00 | Window Closed / Lapsed |