Patent US2531684A successfully refreshed from Google Patents.
Patent US2982986A successfully refreshed from Google Patents.
US2982986A
Expired / Lapsed
US
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Vacuum cleaner with improved fan arrangement
Assignee: General Electric Co
•
Filing: 1956-09-19
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Granted: 1961-05-09
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Expires: 1976-09-19
Abstract
No abstract record available.
Inventors
- 👤 Myron D Tupper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:56
CPC Classifications
A; A47; A47L; A47L5/00; A47L5/12; A47L5/22; F; F04; F04D; F04D17/00; F04D17/08; F04D17/16; F04D17/164; F04D23/00; F04D23/008
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-08 | 1964-11-07 | 1965-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-08 | 1968-11-07 | 1969-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-08 | 1972-11-07 | 1973-05-09 | $7700.00 | Window Closed / Lapsed |