Patent US2950497A successfully refreshed from Google Patents.
US2950497A
Expired / Lapsed
US
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Vacuum cleaner nozzle construction
Assignee: General Electric Co
•
Filing: 1957-08-08
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Granted: 1960-08-30
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Expires: 1977-08-08
Abstract
No abstract record available.
Inventors
- 👤 Robert M Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:02
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/02; A47L9/06; A47L9/0633; A47L9/064; A47L9/0653
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1803921A
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US1812493A
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US1745355A
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US2034196A
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US1968974A
Cited
US2153457A
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US2334733A
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US2540917A
Cited
US2734215A
Cited
US2807824A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-30 | 1964-02-29 | 1964-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-30 | 1968-02-29 | 1968-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-30 | 1972-02-29 | 1972-08-30 | $7700.00 | Window Closed / Lapsed |