US2479941A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air-cooled buffing wheel
Assignee: Individual
•
Filing: 1948-07-29
•
Granted: 1949-08-23
•
Expires: 1968-07-29
Abstract
No abstract record available.
Inventors
- 👤 Charles J Kummer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:32
CPC Classifications
B; B24; B24D; B24D13/00; B24D13/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2140208A
Cited
US2027863A
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US2087012A
Cited
US2110494A
Cited
US2136747A
Cited
US2198282A
Cited
US2182952A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-22 | 1953-02-21 | 1953-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-22 | 1957-02-21 | 1957-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-22 | 1961-02-21 | 1961-08-23 | $7700.00 | Window Closed / Lapsed |