Patent US3343343A successfully refreshed from Google Patents.
US3343343A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum cleaner units
Assignee: Doyle Vacuum Cleaner Co
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Filing: 1962-05-28
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Granted: 1967-09-26
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Expires: 1982-05-28
Abstract
No abstract record available.
Inventors
- 👤 Dewey I Doyle
- 👤 Jr Dewey I Doyle
- 👤 Patrick E Doyle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:18
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/10; A47L9/102; A47L9/12; A47L9/127; A47L9/18; A47L9/182; A47L9/185
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-25 | 1971-03-27 | 1971-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-25 | 1975-03-27 | 1975-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-25 | 1979-03-27 | 1979-09-26 | $7700.00 | Window Closed / Lapsed |