Patent US2668976A successfully refreshed from Google Patents.
US2668976A
Expired / Lapsed
US
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Filler disk for buffing machines
Assignee: Individual
•
Filing: 1950-05-31
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Granted: 1954-02-16
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Expires: 1970-05-31
Abstract
No abstract record available.
Inventors
- 👤 Perry A Beach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:34
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/4036; A47L11/4038; A47L11/02; A47L11/10; A47L11/14; A47L11/16; A47L11/164
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1688378A
Cited
US1125751A
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US1346643A
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US1882769A
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US1897726A
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GB495588A
Cited
US2277389A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-15 | 1957-08-17 | 1958-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-15 | 1961-08-17 | 1962-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-15 | 1965-08-17 | 1966-02-16 | $7700.00 | Window Closed / Lapsed |