Patent US2351089A successfully refreshed from Google Patents.
US2351089A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dust precipitator
Assignee: Individual
•
Filing: 1941-11-04
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Granted: 1944-06-13
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Expires: 1961-11-04
Abstract
No abstract record available.
Inventors
- 👤 Robert G Abbey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:38
CPC Classifications
B; B03; B03C; B03C3/00; B04; B04C; B04C9/00; B04C2009/001; Y; Y10; Y10S; Y10S55/00; Y10S55/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1947-06-13 | 1947-12-13 | 1948-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-06-13 | 1951-12-13 | 1952-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-06-13 | 1955-12-13 | 1956-06-13 | $7700.00 | Window Closed / Lapsed |