Patent US2494319A successfully refreshed from Google Patents.
US2494319A
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US
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Booster brake system
Assignee: Wingfoot Corp
•
Filing: 1947-10-09
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Granted: 1950-01-10
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Expires: 1967-10-09
Abstract
No abstract record available.
Inventors
- 👤 Fillmore D Swan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:22
CPC Classifications
B; B60; B60T; B60T13/00; B60T13/02; B60T13/10; B60T13/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1855504A
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US2075176A
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US2189224A
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US2208820A
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US2289145A
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US2293068A
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US2402115A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-09 | 1953-07-11 | 1954-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-09 | 1957-07-11 | 1958-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-09 | 1961-07-11 | 1962-01-10 | $7700.00 | Window Closed / Lapsed |