US3531051A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for aerating the water jet emerging from a spigot or the like
Assignee: Rokal GmbH
•
Filing: 1968-03-06
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Granted: 1970-09-29
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Expires: 1988-03-06
Abstract
No abstract record available.
Inventors
- 👤 Hans-Heinrich Classen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:55
CPC Classifications
E; E03; E03C; E03C1/00; E03C1/02; E03C1/08; E03C1/084
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2774584A
Cited
US2962225A
Cited
CH362376A
Cited
US2998933A
Cited
GB962559A
Cited
US2989249A
Cited
US3151787A
Cited
US3180534A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-28 | 1974-03-30 | 1974-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-28 | 1978-03-30 | 1978-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-28 | 1982-03-30 | 1982-09-29 | $7700.00 | Window Closed / Lapsed |