US2209970A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wood preservation
Assignee: Monsanto Chemicals Ltd
•
Filing: 1936-04-17
•
Granted: 1940-08-06
•
Expires: 1956-04-17
Abstract
No abstract record available.
Inventors
- 👤 Harold R Hay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:08
CPC Classifications
B; B27; B27K; B27K3/00; B27K3/34; B27K3/38; B27K3/40; B27K3/02; B27K3/0278; B27K3/50; B27K5/00; B27K5/04; B27K2240/00; B27K2240/30; B27K2240/70
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) | 1943-08-06 | 1944-02-05 | 1944-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-08-06 | 1948-02-05 | 1948-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-08-06 | 1952-02-05 | 1952-08-06 | $7700.00 | Window Closed / Lapsed |