Patent US4747108A successfully refreshed from Google Patents.
Patent US3525306A successfully refreshed from Google Patents.
US3525306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suspended railway
Assignee: AIR RAIL Corp A CORP OF NY
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Filing: 1967-12-21
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Granted: 1970-08-25
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Expires: 1987-12-21
Abstract
No abstract record available.
Inventors
- 👤 Alfred Edel
- 👤 Ranko M Bubic
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:54
CPC Classifications
B; B61; B61B; B61B13/00; B61B13/04; E; E01; E01B; E01B25/00; E01B25/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-24 | 1974-02-23 | 1974-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-24 | 1978-02-23 | 1978-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-24 | 1982-02-23 | 1982-08-25 | $7700.00 | Window Closed / Lapsed |