US2832978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Floor polishers
Assignee: Hoover Co
•
Filing: 1954-04-13
•
Granted: 1958-05-06
•
Expires: 1974-04-13
Abstract
No abstract record available.
Inventors
- 👤 Mann Edward Frank
- 👤 Sibbald Frederick Roy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:36
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/4036; A47L11/02; A47L11/10; A47L11/14; A47L11/16; A47L11/161; A47L11/4052; A47L11/4055; A47L11/4075; A47L11/408; A47L11/4091
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR381105A
Cited
US1099344A
Cited
US1186433A
Cited
US1640924A
Cited
US1881129A
Cited
FR805986A
Cited
US2109549A
Cited
US2333829A
Cited
US2665442A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |