US2459376A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter
Assignee: —
•
Filing: —
•
Granted: 1949-01-18
•
Expires: 1966-01-18
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:58
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/50; B01D29/56; B01D29/01; B01D29/03; B01D29/11; B01D29/31; B01D29/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1768350A
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US730485A
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US760793A
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US1063006A
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US1035248A
Cited
US1773797A
Cited
US1688326A
Cited
US1966274A
Cited
US2063742A
Cited
US2210397A
Cited
US2328131A
Cited
US2283629A
Cited
US2322772A
Cited
US2389431A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-01-18 | 1952-07-19 | 1953-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-01-18 | 1956-07-19 | 1957-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-01-18 | 1960-07-19 | 1961-01-18 | $7700.00 | Window Closed / Lapsed |