US2551500A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete railway tie
Assignee: Individual
•
Filing: 1945-03-03
•
Granted: 1951-05-01
•
Expires: 1965-03-03
Abstract
No abstract record available.
Inventors
- 👤 Mabelle D Maney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:30
CPC Classifications
E; E01; E01B; E01B3/00; E01B3/28; E01B3/32; E01B3/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1089301A
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US591565A
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US1320873A
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US803751A
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US829278A
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US911734A
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US954345A
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FR412069A
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US968044A
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US1006430A
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US1077173A
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US1086981A
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US1225325A
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US1425686A
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US1458945A
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US1376580A
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US1614405A
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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) | 1954-04-30 | 1954-10-30 | 1955-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-30 | 1958-10-30 | 1959-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-30 | 1962-10-30 | 1963-05-01 | $7700.00 | Window Closed / Lapsed |