Patent US2544405A successfully refreshed from Google Patents.
US2544405A
Expired / Lapsed
US
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Vacuum cleaner housing unit
Assignee: Individual
•
Filing: 1948-01-20
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Granted: 1951-03-06
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Expires: 1968-01-20
Abstract
No abstract record available.
Inventors
- 👤 Gordon E Weir
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:56
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/0009; A47L9/0018; A47L9/0027; A47L9/0063
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US978167A
Cited
GB191022599A
Cited
US1231689A
Cited
US1681624A
Cited
US2042387A
Cited
US2177153A
Cited
US2319581A
Cited
US2367437A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-05 | 1954-09-04 | 1955-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-05 | 1958-09-04 | 1959-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-05 | 1962-09-04 | 1963-03-06 | $7700.00 | Window Closed / Lapsed |