US2540510A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary floor polisher
Assignee: CLARKE SANDING MACHINE Co
•
Filing: 1946-01-05
•
Granted: 1951-02-06
•
Expires: 1966-01-05
Abstract
No abstract record available.
Inventors
- 👤 Clausen De Witt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:32
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/4075
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1393532A
Cited
FR685953A
Cited
US1794462A
Cited
US1938300A
Cited
US2119386A
Cited
US2254667A
Cited
US2243067A
Cited
US2268015A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-05 | 1954-08-07 | 1955-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-05 | 1958-08-07 | 1959-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-05 | 1962-08-07 | 1963-02-06 | $7700.00 | Window Closed / Lapsed |