US2598673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-capacity oil bath filter
Assignee: Air Maze Corp
•
Filing: 1947-06-20
•
Granted: 1952-06-03
•
Expires: 1967-06-20
Abstract
No abstract record available.
Inventors
- 👤 Jacob K Brixius
- 👤 Hanneman Robert Gorden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 00:16
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/24; B01D46/2403; B01D46/2411; B01D46/0084; B01D46/0097; B01D46/52; B01D46/521; B01D46/522; B01D46/56; B01D46/58; B01D46/60; B01D50/00; B01D50/60
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1912235A
Cited
US1876368A
Cited
US2011303A
Cited
US2046093A
Cited
US2053603A
Cited
US2151593A
Cited
US2150745A
Cited
US2190683A
Cited
US2190886A
Cited
US2354722A
Cited
US2341771A
Cited
US2377142A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-06-03 | 1955-12-03 | 1956-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-03 | 1959-12-03 | 1960-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-03 | 1963-12-03 | 1964-06-03 | $7700.00 | Window Closed / Lapsed |