US2677837A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mophead and refill assembly
Assignee: Individual
•
Filing: 1950-08-02
•
Granted: 1954-05-11
•
Expires: 1970-08-02
Abstract
No abstract record available.
Inventors
- 👤 Channell Charles Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:48
CPC Classifications
A; A47; A47L; A47L13/00; A47L13/10; A47L13/20; A47L13/24; A47L13/254; A47L13/257
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1335689A
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US1339026A
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US1583664A
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CH176157A
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US2044075A
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US2358673A
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US2354969A
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US2486102A
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US2515403A
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US2594553A
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US2572978A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-10 | 1957-11-09 | 1958-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-10 | 1961-11-09 | 1962-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-10 | 1965-11-09 | 1966-05-11 | $7700.00 | Window Closed / Lapsed |