US2779543A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Railroad tie construction
Assignee: Individual
•
Filing: 1953-08-03
•
Granted: 1957-01-29
•
Expires: 1973-08-03
Abstract
No abstract record available.
Inventors
- 👤 Jonas E Gronlund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:25
CPC Classifications
E; E01; E01B; E01B9/00; E01B9/68; E01B9/681; E01B9/683; E01B3/00; E01B3/28; E01B3/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US629926A
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US1045741A
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US1025672A
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US1242334A
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US1406074A
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US1431631A
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US1618508A
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US1635816A
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US1785251A
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US1824778A
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US2337497A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-29 | 1960-07-30 | 1961-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-29 | 1964-07-30 | 1965-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-29 | 1968-07-30 | 1969-01-29 | $7700.00 | Window Closed / Lapsed |