US2818943A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brake system
Assignee: Individual
•
Filing: 1955-02-09
•
Granted: 1958-01-07
•
Expires: 1975-02-09
Abstract
No abstract record available.
Inventors
- 👤 Coward Maynard Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:34
CPC Classifications
B; B60; B60T; B60T13/00; B60T13/10; B60T13/66
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1895965A
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US2190120A
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US2205647A
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US2265800A
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US2387896A
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US2515519A
Cited
US2377318A
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US2374909A
Cited
US2680500A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-06 | 1961-07-08 | 1962-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-06 | 1965-07-08 | 1966-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-06 | 1969-07-08 | 1970-01-07 | $7700.00 | Window Closed / Lapsed |