US2592710A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sweeper type vacuum cleaner having automatic nozzle adjustment
Assignee: Individual
•
Filing: 1948-01-26
•
Granted: 1952-04-15
•
Expires: 1968-01-26
Abstract
No abstract record available.
Inventors
- 👤 James B Kirby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:21
CPC Classifications
A; A47; A47L; A47L5/00; A47L5/12; A47L5/22; A47L5/28; A47L5/32; A47L5/34; A47L5/36; A47L5/362
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1519192A
Cited
US1912386A
Cited
US1925354A
Cited
US1954416A
Cited
US1983566A
Cited
US2055734A
Cited
US2343227A
Cited
US2289711A
Cited
GB564459A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-15 | 1955-10-15 | 1956-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-15 | 1959-10-15 | 1960-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-15 | 1963-10-15 | 1964-04-15 | $7700.00 | Window Closed / Lapsed |