US2625239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum cleaner mechanism responsive to thermal effects of filter bag filling
Assignee: Individual
•
Filing: 1948-05-15
•
Granted: 1953-01-13
•
Expires: 1968-05-15
Abstract
No abstract record available.
Inventors
- 👤 Edgar P Senne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:14
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/10; A47L9/19
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB189809953A
Cited
US2013136A
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US1959759A
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US2034373A
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US2320368A
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US2263442A
Cited
US2289764A
Cited
US2422526A
Cited
US2343732A
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US2447622A
Cited
US2534280A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-01-13 | 1956-07-14 | 1957-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-01-13 | 1960-07-14 | 1961-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-01-13 | 1964-07-14 | 1965-01-13 | $7700.00 | Window Closed / Lapsed |