Patent US2470837A successfully refreshed from Google Patents.
US2470837A
Expired / Lapsed
US
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Floor waxing device
Assignee: Individual
•
Filing: 1946-04-30
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Granted: 1949-05-24
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Expires: 1966-04-30
Abstract
No abstract record available.
Inventors
- 👤 Kenneth M Polson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:18
CPC Classifications
A; A47; A47L; A47L13/00; A47L13/10; A47L13/28; A47L13/30; A47L13/31; A47L13/312
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1554875A
Cited
US1712681A
Cited
US2137944A
Cited
US2234805A
Cited
US2229161A
Cited
US2307858A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-23 | 1952-11-22 | 1953-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-23 | 1956-11-22 | 1957-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-23 | 1960-11-22 | 1961-05-24 | $7700.00 | Window Closed / Lapsed |