US2744281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cellulosic sponge cleaning implement
Assignee: Individual
•
Filing: 1952-02-12
•
Granted: 1956-05-08
•
Expires: 1972-02-12
Abstract
No abstract record available.
Inventors
- 👤 George J Zinggeler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:53
CPC Classifications
A; A47; A47K; A47K7/00; A47K7/02; A47K7/028
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
BE503279A
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DE166516C
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US336746A
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US1433326A
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US1466506A
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US2138712A
Cited
US2242154A
Cited
US2290216A
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US2603921A
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US2682073A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-08 | 1959-11-07 | 1960-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-08 | 1963-11-07 | 1964-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-08 | 1967-11-07 | 1968-05-08 | $7700.00 | Window Closed / Lapsed |