US2951553A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum cleaner
Assignee: ERIK KOHLER
•
Filing: 1959-01-16
•
Granted: 1960-09-06
•
Expires: 1979-01-16
Abstract
No abstract record available.
Inventors
- 👤 Judson T Kirby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:07
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/10; A47L9/14; A47L9/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1324635A
Cited
US932686A
Cited
US1176721A
Cited
US1402294A
Cited
US2079315A
Cited
GB449025A
Cited
GB513347A
Cited
US2242277A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-06 | 1964-03-07 | 1964-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-06 | 1968-03-07 | 1968-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-06 | 1972-03-07 | 1972-09-06 | $7700.00 | Window Closed / Lapsed |