US2355397A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid-treating and anti-short-circuiting device
Assignee: MARIE MARGARET SCHARNBERG
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Filing: 1941-02-01
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Granted: 1944-08-08
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Expires: 1961-02-01
Abstract
No abstract record available.
Inventors
- 👤 Scharnberg Marie Margaret
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:16
CPC Classifications
C; C13; C13B; C13B30/00; C13B30/02; C13B30/022; C13B30/023; B; B01; B01F; B01F27/00; B01F27/80; B01F27/91; B01F35/00; B01F35/40; B01F35/41; B01F35/411; B01F35/4112; B01F27/05; B01F27/11; B01F27/15; B01F35/30; B01F35/32; B01F35/321; B01F35/3213
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) | 1947-08-08 | 1948-02-07 | 1948-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-08-08 | 1952-02-07 | 1952-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-08-08 | 1956-02-07 | 1956-08-08 | $7700.00 | Window Closed / Lapsed |