Patent US3518947A successfully refreshed from Google Patents.
US3518947A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gripping locomotive for suspended railway
Assignee: Individual
•
Filing: 1967-11-08
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Granted: 1970-07-07
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Expires: 1987-11-08
Abstract
No abstract record available.
Inventors
- 👤 Adolf Hermann Borst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:32
CPC Classifications
B; B61; B61B; B61B13/00; B61B13/04; B61B12/00; B61B12/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US661663A
Cited
US1759177A
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US2228034A
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US3074354A
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US3056359A
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US3176628A
Cited
US3380398A
Cited
US3261303A
Cited
US3267876A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-06 | 1974-01-05 | 1974-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-06 | 1978-01-05 | 1978-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-06 | 1982-01-05 | 1982-07-07 | $7700.00 | Window Closed / Lapsed |