Patent US2161503A successfully refreshed from Google Patents.
US2161503A
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Stains and related compositions
Assignee: CHADELOID CHEMICAL CO
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Filing: 1934-10-11
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Granted: 1939-06-06
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Expires: 1954-10-11
Abstract
No abstract record available.
Inventors
- 👤 Edward R Bush
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:59
CPC Classifications
C; C09; C09D; C09D15/00; C09D101/00; C09D101/08; C09D101/10; C09D101/16; C09D101/18; C09D7/00; C09D7/20; B; B27; B27K; B27K3/00; B27K3/34; B27K3/50; B27K5/00; B27K5/02; C08; C08K; C08K5/00; C08K5/16; C08K5/17; C08K5/18
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) | 1942-06-05 | 1942-12-05 | 1943-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-06-05 | 1946-12-05 | 1947-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-06-05 | 1950-12-05 | 1951-06-06 | $7700.00 | Window Closed / Lapsed |