US2597719A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rail cleaning device
Assignee: Individual
•
Filing: 1950-04-24
•
Granted: 1952-05-20
•
Expires: 1970-04-24
Abstract
No abstract record available.
Inventors
- 👤 Harry G Foster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:13
CPC Classifications
E; E01; E01H; E01H8/00; E01H8/10; E01H8/105
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US134595A
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US893878A
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US950889A
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US992606A
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US1007594A
Cited
US1114592A
Cited
US1190019A
Cited
US1751719A
Cited
US1958094A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-05-20 | 1955-11-19 | 1956-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-20 | 1959-11-19 | 1960-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-20 | 1963-11-19 | 1964-05-20 | $7700.00 | Window Closed / Lapsed |