Patent US3021649A successfully refreshed from Google Patents.
US3021649A
Expired / Lapsed
US
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Perforated abrasive faced scrubbing pad
Assignee: IMP FOAM RUBBER CORP
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Filing: 1959-02-04
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Granted: 1962-02-20
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Expires: 1979-02-04
Abstract
No abstract record available.
Inventors
- 👤 Robbins Ralph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:37
CPC Classifications
B; B24; B24D; B24D15/00; B24D15/04; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24322
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB208389A
Cited
US1690960A
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US2178381A
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US2268403A
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US2780533A
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US2650158A
Cited
US2804728A
Cited
US2880439A
Cited
US2838890A
Cited
US2935823A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-19 | 1965-08-21 | 1966-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-19 | 1969-08-21 | 1970-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-19 | 1973-08-21 | 1974-02-20 | $7700.00 | Window Closed / Lapsed |