Patent US2828079A successfully refreshed from Google Patents.
US2828079A
Expired / Lapsed
US
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Railroad crossing construction
Assignee: Individual
•
Filing: 1953-08-24
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Granted: 1958-03-25
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Expires: 1973-08-24
Abstract
No abstract record available.
Inventors
- 👤 Charles H Rennels
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:01
CPC Classifications
E; E01; E01C; E01C9/00; E01C9/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1548057A
Cited
US2057738A
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US2184146A
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US2076338A
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US2137566A
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US2672295A
Cited
US2763586A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-24 | 1961-09-23 | 1962-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-24 | 1965-09-23 | 1966-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-24 | 1969-09-23 | 1970-03-25 | $7700.00 | Window Closed / Lapsed |