US2709273A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor mounting for vacuum cleaners
Assignee: Douglas Manufacturing Co Inc
•
Filing: 1952-06-03
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Granted: 1955-05-31
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Expires: 1972-06-03
Abstract
No abstract record available.
Inventors
- 👤 George M Kelly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:35
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/22; Y; Y10; Y10T; Y10T403/00; Y10T403/45; Y10T403/455; Y10T403/70; Y10T403/7062
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) | 1958-05-30 | 1958-11-29 | 1959-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-30 | 1962-11-29 | 1963-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-30 | 1966-11-29 | 1967-05-31 | $7700.00 | Window Closed / Lapsed |