Patent US1893018A successfully refreshed from Google Patents.
US1893018A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Salts of organic di-thiophosphates
Assignee: Wyeth Holdings LLC
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Filing: 1928-10-22
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Granted: 1933-01-03
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Expires: 1948-10-22
Abstract
No abstract record available.
Inventors
- 👤 Ludwig J Christmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:29
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/001; B03D1/004; B03D1/014; B03D2203/00; B03D2203/02
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) | 1936-01-03 | 1936-07-04 | 1937-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-01-03 | 1940-07-04 | 1941-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-01-03 | 1944-07-04 | 1945-01-03 | $7700.00 | Window Closed / Lapsed |