US2744738A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aerator device
Assignee: Crane Co
•
Filing: 1953-01-27
•
Granted: 1956-05-08
•
Expires: 1973-01-27
Abstract
No abstract record available.
Inventors
- 👤 Julius A Hjulian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:25
CPC Classifications
E; E03; E03C; E03C1/00; E03C1/02; E03C1/08; E03C1/084; B; B05; B05B; B05B1/00; B05B1/26; B05B1/34; B05B1/3402; B05B7/00; B05B7/02; B05B7/04; B05B7/0416; B05B7/0425; B05B7/08; B05B7/0807; B05B7/0846; Y; Y10; Y10S; Y10S261/00; Y10S261/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1213140A
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US1880880A
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US2103425A
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US2347476A
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US2395621A
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US2558238A
Cited
US2570669A
Cited
US2541854A
Cited
FR1000443A
Cited
US2643104A
Cited
US2605144A
Cited
US2624559A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-08 | 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 |