US2738855A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for separating dust from gases
Assignee: Individual
•
Filing: 1953-04-28
•
Granted: 1956-03-20
•
Expires: 1973-04-28
Abstract
No abstract record available.
Inventors
- 👤 Fallon John
- 👤 Mckeown Charles George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:26
CPC Classifications
B; B01; B01D; B01D45/00; B01D45/12; B01D45/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US911802A
Cited
US1760617A
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US1928702A
Cited
US2328220A
Cited
US2367906A
Cited
US2482642A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-20 | 1959-09-19 | 1960-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-20 | 1963-09-19 | 1964-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-20 | 1967-09-19 | 1968-03-20 | $7700.00 | Window Closed / Lapsed |