US2106218A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filtering apparatus
Assignee: Individual
•
Filing: 1936-04-10
•
Granted: 1938-01-25
•
Expires: 1956-04-10
Abstract
No abstract record available.
Inventors
- 👤 James H Krieck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:30
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/01; B01D29/05; B01D29/07; B01D29/072; B01D35/00; B01D35/14; B01D35/147
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) | 1941-01-24 | 1941-07-26 | 1942-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-01-24 | 1945-07-26 | 1946-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-01-24 | 1949-07-26 | 1950-01-25 | $7700.00 | Window Closed / Lapsed |