US2556022A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum cleaner nozzle with variable suction control
Assignee: Individual
•
Filing: 1947-05-14
•
Granted: 1951-06-05
•
Expires: 1967-05-14
Abstract
No abstract record available.
Inventors
- 👤 Atiyeh Amen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:40
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1980438A
Cited
US876766A
Cited
US936222A
Cited
US1053683A
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US1038517A
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GB201639A
Cited
US1800316A
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US1944091A
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GB400618A
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GB427245A
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US2027543A
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US2027544A
Cited
US2153457A
Cited
US2210030A
Cited
US2157077A
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US2275357A
Cited
US2278382A
Cited
US2348082A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-04 | 1954-12-04 | 1955-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-04 | 1958-12-04 | 1959-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-04 | 1962-12-04 | 1963-06-05 | $7700.00 | Window Closed / Lapsed |