US2497435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steam vacuum cleaner
Assignee: Individual
•
Filing: 1948-08-24
•
Granted: 1950-02-14
•
Expires: 1968-08-24
Abstract
No abstract record available.
Inventors
- 👤 Branneman Leonard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:40
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/408; A47L11/4086; A47L11/34; A47L7/00; A47L7/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US695162A
Cited
US1016435A
Cited
US787732A
Cited
US868901A
Cited
US1803693A
Cited
DE596475C
Cited
US2223963A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-13 | 1953-08-15 | 1954-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-13 | 1957-08-15 | 1958-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-13 | 1961-08-15 | 1962-02-14 | $7700.00 | Window Closed / Lapsed |