US2633597A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum cleaner with motor and handle mounted on trunnions
Assignee: Singer Co
•
Filing: 1947-11-05
•
Granted: 1953-04-07
•
Expires: 1967-11-05
Abstract
No abstract record available.
Inventors
- 👤 Edgar P Turner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:43
CPC Classifications
A; A47; A47L; A47L5/00; A47L5/12; A47L5/22; A47L5/28; A47L5/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1542597A
Cited
US1856133A
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US1727922A
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US2099172A
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US2140143A
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US2167740A
Cited
US2175467A
Cited
US2345514A
Cited
US2343819A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-06 | 1956-10-06 | 1957-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-06 | 1960-10-06 | 1961-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-06 | 1964-10-06 | 1965-04-07 | $7700.00 | Window Closed / Lapsed |