Patent US1990840A successfully refreshed from Google Patents.
US1990840A
Expired / Lapsed
US
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Scouring material and device
Assignee: National Tinsel Manufacturing Co
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Filing: 1932-01-07
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Granted: 1935-02-12
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Expires: 1952-01-07
Abstract
No abstract record available.
Inventors
- 👤 William C Protz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:58
CPC Classifications
A; A47; A47L; A47L13/00; A47L13/02; A47L13/06; A47L13/07; D; D02; D02G; D02G3/00; D02G3/02; D02G3/12; D02G3/22; D02G3/34; D03; D03D; D03D1/00; D03D1/0017; D03D1/0023; D03D15/00; D03D15/40; D03D15/49; D03D3/00; D03D3/02; D10; D10B; D10B2101/00; D10B2101/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1938-02-11 | 1938-08-13 | 1939-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-02-11 | 1942-08-13 | 1943-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-02-11 | 1946-08-13 | 1947-02-12 | $7700.00 | Window Closed / Lapsed |