US2770828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cleaning device, including fluid dispensing means
Assignee: Individual
•
Filing: 1952-09-26
•
Granted: 1956-11-20
•
Expires: 1972-09-26
Abstract
No abstract record available.
Inventors
- 👤 Jacob L Ellman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:04
CPC Classifications
A; A47; A47L; A47L13/00; A47L13/10; A47L13/20; A47L13/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US551764A
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US622809A
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US1637951A
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US1535304A
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CH176157A
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US2028214A
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US2243607A
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US2633590A
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US2554571A
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US2598699A
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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) | 1959-11-20 | 1960-05-21 | 1960-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-20 | 1964-05-21 | 1964-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-20 | 1968-05-21 | 1968-11-20 | $7700.00 | Window Closed / Lapsed |