Patent US3023447A successfully refreshed from Google Patents.
US3023447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wall-installed vacuum cleaner
Assignee: Individual
•
Filing: 1958-10-15
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Granted: 1962-03-06
•
Expires: 1978-10-15
Abstract
No abstract record available.
Inventors
- 👤 Edgar P Senne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:12
CPC Classifications
A; A47; A47L; A47L5/00; A47L5/12; A47L5/22; A47L5/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1255175A
Cited
US1681624A
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US1618667A
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FR666652A
Cited
US1796172A
Cited
US2031374A
Cited
GB411253A
Cited
US2045496A
Cited
US2331457A
Cited
US2625703A
Cited
US2715452A
Cited
US2877313A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-03-05 | 1965-09-04 | 1966-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-05 | 1969-09-04 | 1970-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-05 | 1973-09-04 | 1974-03-06 | $7700.00 | Window Closed / Lapsed |