Patent US2683885A successfully refreshed from Google Patents.
US2683885A
Expired / Lapsed
US
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Floor cleaning machine
Assignee: Individual
•
Filing: 1949-10-21
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Granted: 1954-07-20
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Expires: 1969-10-21
Abstract
No abstract record available.
Inventors
- 👤 Ewing M Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:50
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/4072; A47L11/29; A47L11/292; A47L11/4013; A47L11/4036; A47L11/4038; A47L11/4052; A47L11/4061; A47L11/4063; A47L11/4069
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1294881A
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US1498255A
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US1654036A
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US1892926A
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US2248699A
Cited
US2317843A
Cited
US2291740A
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US2268059A
Cited
US2327879A
Cited
GB546123A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-19 | 1958-01-18 | 1958-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-19 | 1962-01-18 | 1962-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-19 | 1966-01-18 | 1966-07-20 | $7700.00 | Window Closed / Lapsed |