Patent US2594553A successfully refreshed from Google Patents.
US2594553A
Expired / Lapsed
US
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Sponge element and backing therefor for removable attachment to a mophead
Assignee: SPONGE PRODUCTS Corp
•
Filing: 1948-12-21
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Granted: 1952-04-29
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Expires: 1968-12-21
Abstract
No abstract record available.
Inventors
- 👤 Greenleaf Nathaniel Bryant
- 👤 Leonard C Webster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:33
CPC Classifications
A; A47; A47L; A47L13/00; A47L13/10; A47L13/20; A47L13/24; A47L13/254; A47L13/257; A47L1/00; A47L1/06; A47L1/15
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1449856A
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GB396469A
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US1921252A
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CH175296A
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US2163638A
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US2150196A
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US2224462A
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US2221128A
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US2358673A
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US2313787A
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US2469060A
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US2515403A
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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) | 1955-04-29 | 1955-10-29 | 1956-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-29 | 1959-10-29 | 1960-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-29 | 1963-10-29 | 1964-04-29 | $7700.00 | Window Closed / Lapsed |