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Patent US2638956A successfully refreshed from Google Patents.
US2638956A
Expired / Lapsed
US
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Tire valve stem protector
Assignee: JACK W ASHCRAFT
•
Filing: 1950-02-03
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Granted: 1953-05-19
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Expires: 1970-02-03
Abstract
No abstract record available.
Inventors
- 👤 John W Nelson
- 👤 Joel B Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:40
CPC Classifications
B; B60; B60C; B60C29/00; B60C29/06; Y; Y10; Y10S; Y10S152/00; Y10S152/13
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US492580A
Cited
US1062000A
Cited
US1218111A
Cited
US1200358A
Cited
US1376296A
Cited
US1512662A
Cited
US1542704A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-18 | 1956-11-17 | 1957-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-18 | 1960-11-17 | 1961-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-18 | 1964-11-17 | 1965-05-19 | $7700.00 | Window Closed / Lapsed |