Patent US2754097A successfully refreshed from Google Patents.
US2754097A
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US
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Aerator device
Assignee: Crane Co
•
Filing: 1953-02-10
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Granted: 1956-07-10
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Expires: 1973-02-10
Abstract
No abstract record available.
Inventors
- 👤 Julius A Hjulian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:24
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)
GB190906012A
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US2075867A
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US2298755A
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US2365161A
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US2395621A
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US2570669A
Cited
FR1000443A
Cited
US2633343A
Cited
US2643104A
Cited
US2624559A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-10 | 1960-01-09 | 1960-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-10 | 1964-01-09 | 1964-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-10 | 1968-01-09 | 1968-07-10 | $7700.00 | Window Closed / Lapsed |