US2427475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trolley and conductor track
Assignee: Individual
•
Filing: 1945-08-29
•
Granted: 1947-09-16
•
Expires: 1965-08-29
Abstract
No abstract record available.
Inventors
- 👤 William H Ringe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:19
CPC Classifications
H; H02; H02G; H02G5/00; H02G5/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US446833A
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US483761A
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US559356A
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US603672A
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US1466893A
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US1429025A
Cited
GB398602A
Cited
GB408703A
Cited
US2129170A
Cited
FR852146A
Cited
US2240947A
Cited
US2245135A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-09-15 | 1951-03-17 | 1951-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-09-15 | 1955-03-17 | 1955-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-09-15 | 1959-03-17 | 1959-09-16 | $7700.00 | Window Closed / Lapsed |