US3608333A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum cleaner and power unit
Assignee: Bison Manufacturing Co Inc
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Filing: 1968-06-20
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Granted: 1971-09-28
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Expires: 1988-06-20
Abstract
Abstract A POWER UNIT USABLE AS THE PRINCIPAL INGREDIENT OF A VACUUM CLEANER, OR AS A MEANS FOR DRIVING CERTAIN ACCESSORIES IN ROTATION, EMPLOYING AN ELECTRIC MOTOR AS THE SOURCE OF ROTATION. OUR POWER UNIT POSSESSES A NUMBER OF NOVEL FEATURES, INCLUDING AN IMPROVED BRUSH DRIVING MEANS, A RESILIENT RING FOR RECEIVING AND SECURING TO THE UNIT, COMPONENTS TO BE OPERATED OR DRIVEN IN ROTATION, A POWER TAKEOFF ARRANGEMENT, AND VARIOUS OTHER IMPROVEMENTS.
Inventors
- 👤 Wilbur-Webb Selley
- 👤 Richard H Schaffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:58
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/10; A47L9/14; A47L9/149; A47L5/00; A47L5/12; A47L5/22; A47L5/28; A47L5/30; A47L9/0081; A47L9/28; A47L9/2836; A47L9/2842; A47L9/2847; A47L9/2852; A47L9/2857; A47L9/2889; A47L9/30; A47L9/32; A47L9/325; Y; Y10; Y10S; Y10S464/00; Y10S464/901
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |