US2532457A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for removing
Assignee: —
•
Filing: —
•
Granted: 1950-12-05
•
Expires: 1967-12-05
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:34
CPC Classifications
B; B01; B01D; B01D21/00; B01D21/24; B01D21/245; B01D21/0039; B01D21/0045; B01D21/01; B01D21/02; B01D21/08; B01D21/2433; B01D21/2444; B01D21/2461; B01D21/2488; Y; Y10; Y10S; Y10S261/00; Y10S261/47
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB189515783A
Cited
US1404873A
Cited
US1716228A
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US1855982A
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US1900809A
Cited
US2144385A
Cited
US2126228A
Cited
US2272441A
Cited
US2342024A
Cited
US2353602A
Cited
US2322017A
Cited
US2381579A
Cited
US2328655A
Cited
US2370974A
Cited
US2369194A
Cited
US2479403A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-04 | 1954-06-05 | 1954-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-04 | 1958-06-05 | 1958-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-04 | 1962-06-05 | 1962-12-05 | $7700.00 | Window Closed / Lapsed |