Patent US2000380A successfully refreshed from Google Patents.
US2439986A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Overhead railway
Assignee: Individual
•
Filing: 1944-06-13
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Granted: 1948-04-20
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Expires: 1964-06-13
Abstract
No abstract record available.
Inventors
- 👤 Rennie Robert John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:19
CPC Classifications
B; B61; B61B; B61B3/00; B61B3/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1305415A
Cited
US431256A
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US508478A
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US295727A
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US640050A
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US945750A
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US1005452A
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US1703496A
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US1666586A
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US1805175A
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US1864323A
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US1998205A
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US2324487A
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US2380183A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-04-20 | 1951-10-20 | 1952-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-04-20 | 1955-10-20 | 1956-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-04-20 | 1959-10-20 | 1960-04-20 | $7700.00 | Window Closed / Lapsed |