Patent US2840843A successfully refreshed from Google Patents.
US2840843A
Expired / Lapsed
US
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Folding mop head assembly
Assignee: Ekco Products Co
•
Filing: 1953-07-01
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Granted: 1958-07-01
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Expires: 1973-07-01
Abstract
No abstract record available.
Inventors
- 👤 Le Roy J Vavrinek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:53
CPC Classifications
A; A47; A47L; A47L13/00; A47L13/10; A47L13/14; A47L13/146
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US565589A
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US1523842A
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DE596139C
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US2251384A
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US2303759A
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US2620502A
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US2677837A
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US2706303A
Cited
DE216565C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-30 | 1961-12-30 | 1962-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-30 | 1965-12-30 | 1966-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-30 | 1969-12-30 | 1970-07-01 | $7700.00 | Window Closed / Lapsed |