US2432007A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wood impregnating solutions containing heavy metal compounds with arsenic and chromic acids
Assignee: Bolidens Gruvaktiebolag
•
Filing: 1940-09-04
•
Granted: 1947-12-02
•
Expires: 1960-09-04
Abstract
No abstract record available.
Inventors
- 👤 Hager Bror Olof
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:56
CPC Classifications
B; B27; B27K; B27K3/00; B27K3/16; B27K3/26; A; A01; A01N; A01N59/00; A01N59/16; A01N59/22; B27K3/28; B27K3/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1957873A
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US2106978A
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US2041655A
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US2012976A
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US2139747A
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US2149284A
Cited
US2194827A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-12-01 | 1951-06-02 | 1951-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-12-01 | 1955-06-02 | 1955-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-12-01 | 1959-06-02 | 1959-12-02 | $7700.00 | Window Closed / Lapsed |