US1976221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wood preservative
Assignee: Dorr Co
•
Filing: 1931-10-10
•
Granted: 1934-10-09
•
Expires: 1951-10-10
Abstract
No abstract record available.
Inventors
- 👤 Ralph T Goodwin
- 👤 John S Rearick
- 👤 Howard P Ferguson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:00
CPC Classifications
B; B27; B27K; B27K3/00; B27K3/34; B27K3/44; B27K3/48; A; A01; A01N; A01N61/00; A01N61/02; B27K3/50
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) | 1937-10-08 | 1938-04-09 | 1938-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-10-08 | 1942-04-09 | 1942-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-10-08 | 1946-04-09 | 1946-10-09 | $7700.00 | Window Closed / Lapsed |