US2609062A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air and gas cleaner
Assignee: Individual
•
Filing: 1947-12-24
•
Granted: 1952-09-02
•
Expires: 1967-12-24
Abstract
No abstract record available.
Inventors
- 👤 Konrad F Schreier
- 👤 Bartolucci Ben
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:34
CPC Classifications
B; B01; B01D; B01D45/00; B01D45/04; B01D45/08; B01D45/10; B01D47/00; B01D47/02; B01D47/021
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1876465A
Cited
US1114874A
Cited
US1170069A
Cited
US1214372A
Cited
US1447336A
Cited
US1650152A
Cited
US2380065A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-02 | 1956-03-03 | 1956-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-02 | 1960-03-03 | 1960-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-02 | 1964-03-03 | 1964-09-02 | $7700.00 | Window Closed / Lapsed |