Patent US2477602A successfully refreshed from Google Patents.
US2477602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Contact roll for abrasive belts
Assignee: 3M Co
•
Filing: 1943-04-02
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Granted: 1949-08-02
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Expires: 1963-04-02
Abstract
No abstract record available.
Inventors
- 👤 Henry R Herchenrider
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:28
CPC Classifications
B; B24; B24B; B24B21/00; B24B21/04; B24B21/12; B24B21/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US224078A
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US455277A
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US596014A
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US1023807A
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US1435721A
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US2085142A
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US2124114A
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US2162279A
Cited
US2236709A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-01 | 1953-01-31 | 1953-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-01 | 1957-01-31 | 1957-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-01 | 1961-01-31 | 1961-08-02 | $7700.00 | Window Closed / Lapsed |