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US2583304A
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US
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Dust hood
Assignee: Willson Products Inc
•
Filing: 1950-06-06
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Granted: 1952-01-22
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Expires: 1970-06-06
Abstract
No abstract record available.
Inventors
- 👤 George J Pipher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:52
CPC Classifications
A; A62; A62B; A62B17/00; A62B17/04; Y; Y10; Y10S; Y10S2/00; Y10S2/901
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2537265A
Cited
US2462005A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-21 | 1955-07-23 | 1956-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-21 | 1959-07-23 | 1960-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-21 | 1963-07-23 | 1964-01-22 | $7700.00 | Window Closed / Lapsed |