US2975725A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and machine for surfacing track ties
Assignee: Individual
•
Filing: 1957-02-26
•
Granted: 1961-03-21
•
Expires: 1977-02-26
Abstract
No abstract record available.
Inventors
- 👤 Russell E Paulson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:19
CPC Classifications
E; E01; E01B; E01B29/00; E01B29/06; E01B29/09
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2603255A
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US936679A
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US2283929A
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US2818820A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-20 | 1964-09-19 | 1965-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-20 | 1968-09-19 | 1969-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-20 | 1972-09-19 | 1973-03-21 | $7700.00 | Window Closed / Lapsed |