US2674896A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drive unit for floor polishing machines and the like
Assignee: Nilfisk Inc
•
Filing: 1951-09-22
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Granted: 1954-04-13
•
Expires: 1971-09-22
Abstract
No abstract record available.
Inventors
- 👤 Daniel A Arones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:00
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/4063; A47L11/4069; A47L11/02; A47L11/10; A47L11/14; A47L11/16; A47L11/162; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19219; Y10T74/19242
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE249055C
Cited
US2158556A
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US2246683A
Cited
US2397312A
Cited
US2534679A
Cited
US2507852A
Cited
US2506514A
Cited
US2550012A
Cited
US2566579A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-12 | 1957-10-12 | 1958-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-12 | 1961-10-12 | 1962-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-12 | 1965-10-12 | 1966-04-13 | $7700.00 | Window Closed / Lapsed |