Patent US1680529A successfully refreshed from Google Patents.
US1680529A
Expired / Lapsed
US
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Method of treating wood
Assignee: Brown Co
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Filing: 1927-04-08
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Granted: 1928-08-14
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Expires: 1947-04-08
Abstract
No abstract record available.
Inventors
- 👤 George A Richter
- 👤 Wallace B Van Arsdel
- 👤 John G Gosselink
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:25
CPC Classifications
B; B27; B27K; B27K3/00; B27K3/02; B27K3/08; B27K1/00; B27K3/0207; B27K3/0221; B27K3/16; B27K3/20; B27K5/00; B27K5/001; B27K5/02
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) | 1931-08-14 | 1932-02-13 | 1932-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-08-14 | 1936-02-13 | 1936-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-08-14 | 1940-02-13 | 1940-08-14 | $7700.00 | Window Closed / Lapsed |