US3387781A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rail anchor and rail seat construction
Assignee: Railroad Rubber Products Inc
•
Filing: 1966-11-23
•
Granted: 1968-06-11
•
Expires: 1986-11-23
Abstract
No abstract record available.
Inventors
- 👤 Nelson K Moses
- 👤 Robert A Mcclung
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:07
CPC Classifications
E; E01; E01B; E01B9/00; E01B9/02; E01B9/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1119580A
Cited
FR793608A
Cited
US2162599A
Cited
GB922658A
Cited
US3189279A
Cited
US3223328A
Cited
US3268170A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-11 | 1971-12-11 | 1972-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-11 | 1975-12-11 | 1976-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-11 | 1979-12-11 | 1980-06-11 | $7700.00 | Window Closed / Lapsed |