Patent US3452708A successfully refreshed from Google Patents.
US3452708A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Leak indicating dust cap for pneumatic tires
Assignee: DAVID L RICHARDSON
•
Filing: 1967-07-28
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Granted: 1969-07-01
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Expires: 1987-07-28
Abstract
No abstract record available.
Inventors
- 👤 David L Richardson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:48
CPC Classifications
B; B60; B60C; B60C23/00; B60C23/02; B60C23/04; B60C23/0491; B60C23/0496
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1472712A
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US1834079A
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US2417449A
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US2618977A
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US2579120A
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US2689481A
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US2795204A
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US3111930A
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US3241514A
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US3380427A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-30 | 1972-12-30 | 1973-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-30 | 1976-12-30 | 1977-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-30 | 1980-12-30 | 1981-07-01 | $7700.00 | Window Closed / Lapsed |