US2515468A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric brake
Assignee: Transit Research Corp
•
Filing: 1945-03-19
•
Granted: 1950-07-18
•
Expires: 1965-03-19
Abstract
No abstract record available.
Inventors
- 👤 Emil H Piron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:02
CPC Classifications
B; B60; B60T; B60T13/00; B60T13/74
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US360060A
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US372598A
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US574120A
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US618864A
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US1991903A
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US767258A
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US950336A
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US1059096A
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US1501600A
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US2118246A
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US2172116A
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US2257302A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-17 | 1954-01-16 | 1954-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-17 | 1958-01-16 | 1958-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-17 | 1962-01-16 | 1962-07-18 | $7700.00 | Window Closed / Lapsed |