US2952332A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dust collector cup
Assignee: PARSONS ENGINEERING Corp
•
Filing: 1957-12-09
•
Granted: 1960-09-13
•
Expires: 1977-12-09
Abstract
No abstract record available.
Inventors
- 👤 Metro Stephen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:08
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/02; B01D46/04; B01D46/0002; B01D46/0005; B01D46/66; B01D46/74; B01D46/76; B01D2275/00; B01D2275/20; B01D2275/208; Y; Y10; Y10S; Y10S55/00; Y10S55/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE183946C
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US1256672A
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US1882221A
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US2010898A
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US2079315A
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US2120595A
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US2576310A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-13 | 1964-03-14 | 1964-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-13 | 1968-03-14 | 1968-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-13 | 1972-03-14 | 1972-09-13 | $7700.00 | Window Closed / Lapsed |