Patent US2425238A successfully refreshed from Google Patents.
US2425238A
Expired / Lapsed
US
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Fumigant mixtures of ethzlene bromide and methylene chloride
Assignee: Dow Chemical Co
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Filing: 1945-01-01
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Granted: 1947-08-05
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Expires: 1965-01-01
Abstract
No abstract record available.
Inventors
- 👤 Fred W Fletcher
- 👤 Kenaga Eugene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:43
CPC Classifications
A; A01; A01N; A01N25/00; A01N29/00; A01N29/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-08-04 | 1951-02-03 | 1951-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-08-04 | 1955-02-03 | 1955-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-08-04 | 1959-02-03 | 1959-08-05 | $7700.00 | Window Closed / Lapsed |