Patent US1398285A successfully refreshed from Google Patents.
US1398285A
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Filtering apparatus
Assignee: Joseph E Nelson & Sons
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Filing: 1919-04-09
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Granted: 1921-11-29
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Expires: 1939-04-09
Abstract
No abstract record available.
Inventors
- 👤 Inos B Tanner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:46
CPC Classifications
B; B01; B01D; B01D21/00; B01D21/02; B01D21/24; B01D24/00; B01D24/02; B01D24/10; B01D24/16; B01D24/165; B01D24/46; B01D24/4631; B01D36/00; B01D36/04
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) | 1924-11-28 | 1925-05-30 | 1925-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1928-11-28 | 1929-05-30 | 1929-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1932-11-28 | 1933-05-30 | 1933-11-29 | $7700.00 | Window Closed / Lapsed |