US2871503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum cleaner on-and-off switching devices
Assignee: Individual
•
Filing: 1953-07-02
•
Granted: 1959-02-03
•
Expires: 1973-07-02
Abstract
No abstract record available.
Inventors
- 👤 Edgar P Senne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:36
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/28; A47L9/2857; A47L9/2863; A47L5/00; A47L5/12; A47L5/22; A47L5/36; A47L9/2836; A47L9/2842
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE18632E
Cited
US1447814A
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US1573771A
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US1721459A
Cited
US1582664A
Cited
US1856133A
Cited
US2091644A
Cited
US2616114A
Cited
US2583949A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-02 | 1962-08-04 | 1963-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-02 | 1966-08-04 | 1967-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-02 | 1970-08-04 | 1971-02-03 | $7700.00 | Window Closed / Lapsed |