US1842993A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insecticide
Assignee: Winthrop Chemical Co Inc
•
Filing: 1928-07-05
•
Granted: 1932-01-26
•
Expires: 1948-07-05
Abstract
No abstract record available.
Inventors
- 👤 Marx Karl
- 👤 Wesche Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:14
CPC Classifications
A; A01; A01N; A01N31/00; A01N31/08; A01N31/14; C; C07; C07C; C07C2602/00; C07C2602/02; C07C2602/04; C07C2602/08
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) | 1935-01-25 | 1935-07-27 | 1936-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-01-25 | 1939-07-27 | 1940-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-01-25 | 1943-07-27 | 1944-01-26 | $7700.00 | Window Closed / Lapsed |