Patent US3421797A successfully refreshed from Google Patents.
US3421797A
Expired / Lapsed
US
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Tire rims
Assignee: Dayton Steel Foundry Co
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Filing: 1966-08-04
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Granted: 1969-01-14
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Expires: 1986-08-04
Abstract
No abstract record available.
Inventors
- 👤 William D Walther
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:31
CPC Classifications
B; B60; B60B; B60B25/00; B60B25/22; B60B11/00; B60B11/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2048177A
Cited
DE626162C
Cited
US2188271A
Cited
GB552363A
Cited
GB546938A
Cited
US2904096A
Cited
AT199525B
Cited
US2948568A
Cited
US3079200A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-14 | 1972-07-15 | 1973-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-14 | 1976-07-15 | 1977-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-14 | 1980-07-15 | 1981-01-14 | $7700.00 | Window Closed / Lapsed |