US2580655A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inertial air cleaner and silencer
Assignee: Burgess-Manning Co
•
Filing: 1947-08-15
•
Granted: 1952-01-01
•
Expires: 1967-08-15
Abstract
No abstract record available.
Inventors
- 👤 Alfred S Chipley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:46
CPC Classifications
B; B01; B01D; B01D45/00; B01D45/02; Y; Y10; Y10S; Y10S55/00; Y10S55/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US485915A
Cited
FR636564A
Cited
US919249A
Cited
DE416390C
Cited
US1872752A
Cited
US2196491A
Cited
US2265343A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-31 | 1955-07-02 | 1956-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-31 | 1959-07-02 | 1960-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-31 | 1963-07-02 | 1964-01-01 | $7700.00 | Window Closed / Lapsed |