Patent US2792584A successfully refreshed from Google Patents.
US2792584A
Expired / Lapsed
US
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Scraper having a detachable blade
Assignee: IND FOR BLIND Inc
•
Filing: 1952-08-11
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Granted: 1957-05-21
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Expires: 1972-08-11
Abstract
No abstract record available.
Inventors
- 👤 Paul A Fryda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:51
CPC Classifications
A; A47; A47L; A47L1/00; A47L1/06; A46; A46B; A46B17/00; A46B17/08; B; B60; B60S; B60S3/00; B60S3/04; B60S3/045
Claims Analysis
Total Claims: 0
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US1676857A
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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) | 1960-05-20 | 1960-11-19 | 1961-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-20 | 1964-11-19 | 1965-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-20 | 1968-11-19 | 1969-05-21 | $7700.00 | Window Closed / Lapsed |