US2668306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Floor polisher
Assignee: Hoover Co
•
Filing: 1950-09-13
•
Granted: 1954-02-09
•
Expires: 1970-09-13
Abstract
No abstract record available.
Inventors
- 👤 Erhard O Kohl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:16
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/4036; A47L11/4038; A47L11/02; A47L11/10; A47L11/14; A47L11/16; A47L11/162; A47L11/1625; A47L11/4075; A47L11/408; A47L11/4083; A47L11/4088
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US929943A
Cited
US1447382A
Cited
US1547115A
Cited
US1783773A
Cited
US1937287A
Cited
US1762637A
Cited
US1877951A
Cited
US1931977A
Cited
US1972318A
Cited
US2000167A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-08 | 1957-08-10 | 1958-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-08 | 1961-08-10 | 1962-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-08 | 1965-08-10 | 1966-02-09 | $7700.00 | Window Closed / Lapsed |