Patent US3443103A successfully refreshed from Google Patents.
Patent US2470601A successfully refreshed from Google Patents.
US2470601A
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Dust collecting apparatus
Assignee: Individual
•
Filing: 1946-07-08
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Granted: 1949-05-17
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Expires: 1966-07-08
Abstract
No abstract record available.
Inventors
- 👤 John R Burke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:16
CPC Classifications
B; B24; B24B; B24B55/00; B24B55/06; Y; Y10; Y10S; Y10S29/00; Y10S29/079; Y10S29/101
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US375821A
Cited
US1447765A
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US1642171A
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US2337983A
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US2293250A
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US2384991A
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US2409479A
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US2399629A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-16 | 1952-11-15 | 1953-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-16 | 1956-11-15 | 1957-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-16 | 1960-11-15 | 1961-05-17 | $7700.00 | Window Closed / Lapsed |