US3471868A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrasonic sensing device for a flushing valve on a plumbing fixture
Assignee: Palleon Electronics Ltd
•
Filing: 1968-01-25
•
Granted: 1969-10-14
•
Expires: 1988-01-25
Abstract
No abstract record available.
Inventors
- 👤 Eugene K Zorn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:09
CPC Classifications
E; E03; E03D; E03D5/00; E03D5/10; E03D5/105
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2603794A
Cited
US2738448A
Cited
US3133204A
Cited
US3339212A
Cited
US3416162A
Cited
US3434164A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-13 | 1973-04-14 | 1973-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-13 | 1977-04-14 | 1977-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-13 | 1981-04-14 | 1981-10-14 | $7700.00 | Window Closed / Lapsed |