US2580140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drum type abrading device
Assignee: Individual
•
Filing: 1949-08-08
•
Granted: 1951-12-25
•
Expires: 1969-08-08
Abstract
No abstract record available.
Inventors
- 👤 William H Van Zomeren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:53
CPC Classifications
B; B24; B24D; B24D11/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US178994A
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US217300A
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US610761A
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US613079A
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US1104684A
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DE394137C
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GB400754A
Cited
US2107411A
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US2403434A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-24 | 1955-06-25 | 1955-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-24 | 1959-06-25 | 1959-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-24 | 1963-06-25 | 1963-12-25 | $7700.00 | Window Closed / Lapsed |