US2641878A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Abrading unit
Assignee: Individual
•
Filing: 1951-07-27
•
Granted: 1953-06-16
•
Expires: 1971-07-27
Abstract
No abstract record available.
Inventors
- 👤 John M Radabaugh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:26
CPC Classifications
B; B24; B24D; B24D9/00; B24D9/08; B24D9/085
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE315917C
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US361399A
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US449950A
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US594320A
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US619921A
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GB190607249A
Cited
US905464A
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US878269A
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US923865A
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US1623521A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-15 | 1956-12-15 | 1957-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-15 | 1960-12-15 | 1961-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-15 | 1964-12-15 | 1965-06-16 | $7700.00 | Window Closed / Lapsed |