Patent US3538271A successfully refreshed from Google Patents.
US3538271A
Expired / Lapsed
US
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Tire pressure indicator with mercury switches having vertically spaced contacts
Assignee: Individual
•
Filing: 1967-09-12
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Granted: 1970-11-03
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Expires: 1987-09-12
Abstract
No abstract record available.
Inventors
- 👤 Alexander Mirsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:43
CPC Classifications
B; B60; B60C; B60C23/00; B60C23/02; B60C23/04; B60C23/0408; B60C23/0422
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2504381A
Cited
US2934354A
Cited
US3104289A
Cited
US3250868A
Cited
US3297984A
Cited
US3208425A
Cited
US3430196A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-02 | 1974-05-04 | 1974-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-02 | 1978-05-04 | 1978-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-02 | 1982-05-04 | 1982-11-03 | $7700.00 | Window Closed / Lapsed |