Patent US2509687A successfully refreshed from Google Patents.
US2509687A
Expired / Lapsed
US
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Combined floor waxer and polisher
Assignee: Individual
•
Filing: 1946-10-31
•
Granted: 1950-05-30
•
Expires: 1966-10-31
Abstract
No abstract record available.
Inventors
- 👤 Lee William Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:20
CPC Classifications
A; A47; A47L; A47L13/00; A47L13/10; A47L13/28; A47L13/29; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32008; Y10T403/32041
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1451200A
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US1526161A
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US1969476A
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US2034455A
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US1966533A
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CH165458A
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US1989825A
Cited
US2007536A
Cited
US2173350A
Cited
US2428204A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-29 | 1953-11-28 | 1954-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-29 | 1957-11-28 | 1958-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-29 | 1961-11-28 | 1962-05-30 | $7700.00 | Window Closed / Lapsed |