Patent US3045409A successfully refreshed from Google Patents.
US3045409A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air filter for dust collector
Assignee: Individual
•
Filing: 1959-08-31
•
Granted: 1962-07-24
•
Expires: 1979-08-31
Abstract
No abstract record available.
Inventors
- 👤 Kronstad Haavard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:59
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/24; B01D46/26
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US272474A
Cited
US299852A
Cited
US2732912A
Cited
US788882A
Cited
US1235581A
Cited
DE369631C
Cited
US1626852A
Cited
US2867288A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-23 | 1966-01-22 | 1966-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-23 | 1970-01-22 | 1970-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-23 | 1974-01-22 | 1974-07-24 | $7700.00 | Window Closed / Lapsed |