US2822218A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Integral wheel and drum
Assignee: Individual
•
Filing: 1953-07-06
•
Granted: 1958-02-04
•
Expires: 1973-07-06
Abstract
No abstract record available.
Inventors
- 👤 Marshall G Whitfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:58
CPC Classifications
B; B60; B60B; B60B3/00; B60B3/02; B60B21/00; B60B21/08; B60B3/06; F; F16; F16D; F16D65/00; F16D65/02; F16D2065/13; F16D2065/1304; F16D2065/132
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1807689A
Cited
US1957654A
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US1727486A
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US1686346A
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US1861432A
Cited
US2109110A
Cited
US2288438A
Cited
US2435991A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-03 | 1961-08-05 | 1962-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-03 | 1965-08-05 | 1966-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-03 | 1969-08-05 | 1970-02-04 | $7700.00 | Window Closed / Lapsed |