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US2328131A
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Assignee: Individual
•
Filing: 1938-12-05
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Granted: 1943-08-31
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Expires: 1958-12-05
Abstract
No abstract record available.
Inventors
- 👤 Henry G Eisler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:23
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/14; B01D24/00; B01D24/007; B01D24/008; B01D24/02; B01D24/10; B01D24/16; B01D24/165; B01D29/00; B01D29/01; B01D29/05; B01D29/11; B01D29/13; B01D29/15; B01D29/21; B01D29/50; B01D29/56; B01D29/58
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) | 1946-08-30 | 1947-03-01 | 1947-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-08-30 | 1951-03-01 | 1951-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-08-30 | 1955-03-01 | 1955-08-31 | $7700.00 | Window Closed / Lapsed |