US2054399A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wood preservation and mode of treatment
Assignee: Industrial Research Corp
•
Filing: 1933-10-13
•
Granted: 1936-09-15
•
Expires: 1953-10-13
Abstract
No abstract record available.
Inventors
- 👤 Jr Robert H White
- 👤 Joseph A Vaughan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:17
CPC Classifications
B; B27; B27K; B27K3/00; B27K3/02; B27K3/0207; B27K3/0278; B27K3/34; B27K3/36
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) | 1939-09-15 | 1940-03-16 | 1940-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-09-15 | 1944-03-16 | 1944-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-09-15 | 1948-03-16 | 1948-09-15 | $7700.00 | Window Closed / Lapsed |