Patent US2656897A successfully refreshed from Google Patents.
US2656897A
Expired / Lapsed
US
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Suction cleaner
Assignee: Individual
•
Filing: 1950-11-24
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Granted: 1953-10-27
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Expires: 1970-11-24
Abstract
No abstract record available.
Inventors
- 👤 Jr Edward H Yonkers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:15
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/10; A47L9/14; A47L9/1427; A47L9/1472; A47L9/0081; A47L9/12; A47L9/125
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1921085A
Cited
US2198568A
Cited
US2296359A
Cited
US2242278A
Cited
US2516707A
Cited
US2587565A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-26 | 1957-04-27 | 1957-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-26 | 1961-04-27 | 1961-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-26 | 1965-04-27 | 1965-10-27 | $7700.00 | Window Closed / Lapsed |