US3616481A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Replaceable sponge mop head
Assignee: Nylonge Corp
•
Filing: 1970-02-18
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Granted: 1971-11-02
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Expires: 1990-02-18
Abstract
Abstract A UNIVERSAL REPLACEABLE SPONGE MOP HEAD INCLUDES A SPONGE BLOCK HAVING A RECTANGULAR BACKING PLATE CEMENTED TO FACE THEREOF. THE BACKING PLATE HAS INTEGRALLY FORMED THEREWITH A PAIR OF LONGITUDINALLY SPACED FASTENERS, EACH INCLUDING A PAIR OF SIMILAR TRANSVERSELY SPACED APERUTRED RESILIENT LEGS, PROVIDED WITH LONGITUDINAL RIDGES DIRECTED TOWARD EACH OTHER. LOCATING TABS PROJECT FROM THE BACKING PLATE REAR EDGE AND THE SIDE EDGES ARE MEDIALLY INWARDLY OFFSET FOR THE RECEPTION OF A TOOL. LONGITUDINALLY SPACED FASTENER RECEIVING APERTURES ARE MEDIALLY FORMED IN THE BACKING PLATE.
Inventors
- 👤 Cornelis Van Spronsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:39
CPC Classifications
A; A47; A47L; A47L13/00; A47L13/10; A47L13/42; A47L13/46; A47L13/14; A47L13/146
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-01 | 1975-05-03 | 1975-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-01 | 1979-05-03 | 1979-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-01 | 1983-05-03 | 1983-11-02 | $7700.00 | Window Closed / Lapsed |