US2675218A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water aerator
Assignee: HAZEL BLETCHER SKINNER
•
Filing: 1950-02-23
•
Granted: 1954-04-13
•
Expires: 1970-02-23
Abstract
No abstract record available.
Inventors
- 👤 Ralph E Bletcher
- 👤 Irving A Ward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:34
CPC Classifications
E; E03; E03C; E03C1/00; E03C1/02; E03C1/08; E03C1/084; Y; Y10; Y10S; Y10S261/00; Y10S261/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1027321A
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US1328204A
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GB323482A
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US2316832A
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US2210846A
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US2176579A
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US2140517A
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US2492037A
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US2510395A
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US2510396A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-12 | 1957-10-12 | 1958-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-12 | 1961-10-12 | 1962-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-12 | 1965-10-12 | 1966-04-13 | $7700.00 | Window Closed / Lapsed |