Patent US3408487A successfully refreshed from Google Patents.
Patent US2556641A successfully refreshed from Google Patents.
US2556641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grinder for pigments and other materials
Assignee: Individual
•
Filing: 1948-05-22
•
Granted: 1951-06-12
•
Expires: 1968-05-22
Abstract
No abstract record available.
Inventors
- 👤 Harding F Bakewell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:02
CPC Classifications
B; B02; B02C; B02C7/00; B02C7/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US29033A
Cited
US209792A
Cited
US464083A
Cited
DE1559C
Cited
US653679A
Cited
US835286A
Cited
US1129142A
Cited
US1226275A
Cited
GB102631A
Cited
US1628619A
Cited
US1712369A
Cited
GB318392A
Cited
GB333635A
Cited
US1993900A
Cited
US2147833A
Cited
GB428742A
Cited
US2121275A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-11 | 1954-12-11 | 1955-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-11 | 1958-12-11 | 1959-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-11 | 1962-12-11 | 1963-06-12 | $7700.00 | Window Closed / Lapsed |