US2684126A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dust collector for vacuum cleaners, blowers, and other dust filters
Assignee: Doyle Vacuum Cleaner Co
•
Filing: 1951-06-19
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Granted: 1954-07-20
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Expires: 1971-06-19
Abstract
No abstract record available.
Inventors
- 👤 Sr Dewey L Doyle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:36
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/28; A47L9/2868; A47L9/10; A47L9/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US326176A
Cited
US1363753A
Cited
US1574422A
Cited
US2031454A
Cited
US2308682A
Cited
US2364069A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-19 | 1958-01-18 | 1958-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-19 | 1962-01-18 | 1962-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-19 | 1966-01-18 | 1966-07-20 | $7700.00 | Window Closed / Lapsed |