US3383043A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Railroad track structure
Assignee: Individual
•
Filing: 1967-01-03
•
Granted: 1968-05-14
•
Expires: 1987-01-03
Abstract
No abstract record available.
Inventors
- 👤 Robert M Tew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:06
CPC Classifications
E; E01; E01B; E01B9/00; E01B9/62; E01B11/00; E01B11/02; E01B3/00; E01B3/16; E01B3/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US208880A
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US218853A
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US223052A
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US878588A
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US1119580A
Cited
US2162599A
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US2670136A
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US2553010A
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US3189279A
Cited
US3268170A
Cited
US3298607A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-14 | 1971-11-13 | 1972-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-14 | 1975-11-13 | 1976-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-14 | 1979-11-13 | 1980-05-14 | $7700.00 | Window Closed / Lapsed |