Patent US2672949A successfully refreshed from Google Patents.
US2672949A
Expired / Lapsed
US
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Vacuum cleaner
Assignee: Individual
•
Filing: 1951-04-13
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Granted: 1954-03-23
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Expires: 1971-04-13
Abstract
No abstract record available.
Inventors
- 👤 Hage Hildur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:24
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/22; A47L5/00; A47L5/12; A47L5/22; A47L5/36; A47L5/365; Y; Y10; Y10S; Y10S55/00; Y10S55/03
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE245131C
Cited
US1356061A
Cited
US996691A
Cited
US963139A
Cited
US1133543A
Cited
FR717005A
Cited
US2025946A
Cited
US2388279A
Cited
US2616517A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-22 | 1957-09-21 | 1958-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-22 | 1961-09-21 | 1962-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-22 | 1965-09-21 | 1966-03-23 | $7700.00 | Window Closed / Lapsed |