US2415935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ash collector
Assignee: Fly Ash Arrestor Corp
•
Filing: 1945-01-01
•
Granted: 1947-02-18
•
Expires: 1965-01-01
Abstract
No abstract record available.
Inventors
- 👤 Ellis W Bullock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:50
CPC Classifications
B; B04; B04C; B04C3/00; B04C3/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US630023A
Cited
US1525249A
Cited
US1735298A
Cited
US1917643A
Cited
US2082242A
Cited
US2348785A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-02-17 | 1950-08-19 | 1951-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-02-17 | 1954-08-19 | 1955-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-02-17 | 1958-08-19 | 1959-02-18 | $7700.00 | Window Closed / Lapsed |