US2612236A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dust collector
Assignee: Pangborn Corp
•
Filing: 1950-01-06
•
Granted: 1952-09-30
•
Expires: 1970-01-06
Abstract
No abstract record available.
Inventors
- 👤 Walter O Vedder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:20
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/02; B01D46/04; B01D46/0002; B01D46/0005; B01D46/66; B01D46/74; B01D46/76; B01D2265/00; B01D2265/02; B01D2265/028; Y; Y10; Y10S; Y10S55/00; Y10S55/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1143833A
Cited
US735904A
Cited
GB191110077A
Cited
US1496666A
Cited
US1703681A
Cited
US2079315A
Cited
US2143664A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-30 | 1956-03-31 | 1956-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-30 | 1960-03-31 | 1960-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-30 | 1964-03-31 | 1964-09-30 | $7700.00 | Window Closed / Lapsed |