US2771839A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for depositing abrasive particles on articles
Assignee: Gladding Mcbean and Co
•
Filing: 1953-06-24
•
Granted: 1956-11-27
•
Expires: 1973-06-24
Abstract
No abstract record available.
Inventors
- 👤 Randall C Ragan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:03
CPC Classifications
B; B41; B41F; B41F15/00; B41F15/08; B41F15/0804
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US18618A
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US513212A
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USRE16048E
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US1411267A
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US1832216A
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US1966416A
Cited
US2009098A
Cited
US2116467A
Cited
US2183223A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-27 | 1960-05-28 | 1960-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-27 | 1964-05-28 | 1964-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-27 | 1968-05-28 | 1968-11-27 | $7700.00 | Window Closed / Lapsed |