US2882540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cam operated mop device
Assignee: SPONGE PRODUCTS Corp
•
Filing: 1953-11-30
•
Granted: 1959-04-21
•
Expires: 1973-11-30
Abstract
No abstract record available.
Inventors
- 👤 Henry H Marker
- 👤 Nathaniel B Greenleaf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:59
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)
BE496850A
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GB189520332A
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GB136719A
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DE596139C
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DE617197C
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GB553287A
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US2648859A
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US2730744A
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FR1050747A
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US2706303A
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DE216565C
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-20 | 1962-10-20 | 1963-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-20 | 1966-10-20 | 1967-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-20 | 1970-10-20 | 1971-04-21 | $7700.00 | Window Closed / Lapsed |