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Patent US2445725A successfully refreshed from Google Patents.
US2445725A
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Tire construction
Assignee: Bridgestone Firestone Inc
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Filing: 1944-06-14
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Granted: 1948-07-20
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Expires: 1964-06-14
Abstract
No abstract record available.
Inventors
- 👤 Ralph C Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:26
CPC Classifications
B; B60; B60C; B60C11/00; B60C11/14; B60C11/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US603161A
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US1254884A
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US1719628A
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US1769694A
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US2027248A
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US2118774A
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US2241227A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-07-20 | 1952-01-19 | 1952-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-07-20 | 1956-01-19 | 1956-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-07-20 | 1960-01-19 | 1960-07-20 | $7700.00 | Window Closed / Lapsed |