Patent US2083674A successfully refreshed from Google Patents.
US2083674A
Expired / Lapsed
US
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Separator
Assignee: LILLIAN M SMITH
•
Filing: 1934-06-26
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Granted: 1937-06-15
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Expires: 1954-06-26
Abstract
No abstract record available.
Inventors
- 👤 Ira E Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:01
CPC Classifications
C; C22; C22B; C22B11/00; C22B11/10
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) | 1940-06-14 | 1940-12-14 | 1941-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-06-14 | 1944-12-14 | 1945-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-06-14 | 1948-12-14 | 1949-06-15 | $7700.00 | Window Closed / Lapsed |