US3416727A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthetic plastic railroad tie
Assignee: BENJAMIN P COLLINS
•
Filing: 1966-04-27
•
Granted: 1968-12-17
•
Expires: 1986-04-27
Abstract
No abstract record available.
Inventors
- 👤 Benjamin P Collins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:31
CPC Classifications
E; E01; E01B; E01B3/00; E01B3/44
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1320873A
Cited
US1566550A
Cited
US958226A
Cited
US1110684A
Cited
US1431631A
Cited
US2324758A
Cited
US2611545A
Cited
US3289940A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-17 | 1972-06-17 | 1972-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-17 | 1976-06-17 | 1976-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-17 | 1980-06-17 | 1980-12-17 | $7700.00 | Window Closed / Lapsed |