Patent US2397193A successfully refreshed from Google Patents.
US2397193A
Expired / Lapsed
US
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Wood bleach and process of making same
Assignee: Individual
•
Filing: 1942-05-15
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Granted: 1946-03-26
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Expires: 1962-05-15
Abstract
No abstract record available.
Inventors
- 👤 Miller Gustavus Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:40
CPC Classifications
B; B27; B27K; B27K5/00; B27K5/02; B27K3/00; B27K3/02; B27K3/0278; B27K3/16; B27K3/163; B27K3/20; B27K3/52; B27K5/04
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) | 1949-03-25 | 1949-09-24 | 1950-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-03-25 | 1953-09-24 | 1954-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-03-25 | 1957-09-24 | 1958-03-26 | $7700.00 | Window Closed / Lapsed |