US2929084A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Deflector assembly for railroad track sweepers
Assignee: Kershaw Manufacturing Co Inc
•
Filing: 1958-01-16
•
Granted: 1960-03-22
•
Expires: 1978-01-16
Abstract
No abstract record available.
Inventors
- 👤 Royce G Kershaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:44
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)
US400497A
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US626039A
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US1167051A
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US1238855A
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US2727263A
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US2684496A
Cited
US2777220A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-22 | 1963-09-21 | 1964-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-22 | 1967-09-21 | 1968-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-22 | 1971-09-21 | 1972-03-22 | $7700.00 | Window Closed / Lapsed |