US2974608A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suspension railway
Assignee: Individual
•
Filing: 1957-03-19
•
Granted: 1961-03-14
•
Expires: 1977-03-19
Abstract
No abstract record available.
Inventors
- 👤 Grube Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:41
CPC Classifications
B; B61; B61B; B61B13/00; B61B13/04; E; E01; E01B; E01B25/00; E01B25/16; E01B25/22; E01B25/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US403443A
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US544677A
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US589714A
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US596015A
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US911390A
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DE453350C
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US1811270A
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GB608641A
Cited
US2425739A
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US2781001A
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US2771309A
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US2884655A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-13 | 1964-09-12 | 1965-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-13 | 1968-09-12 | 1969-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-13 | 1972-09-12 | 1973-03-14 | $7700.00 | Window Closed / Lapsed |