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US3516384A
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US
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Ultrasonic warning system
Assignee: GEORGE A WILL
•
Filing: 1966-12-07
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Granted: 1970-06-23
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Expires: 1986-12-07
Abstract
No abstract record available.
Inventors
- 👤 George A Will
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:21
CPC Classifications
A; A01; A01M; A01M29/00; A01M29/16; A01M29/18; G; G10; G10K; G10K5/00; G10K5/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3231854A
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US2695001A
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US2564984A
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US2971491A
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US2787778A
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US3156212A
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US3277861A
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US3319247A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-22 | 1973-12-22 | 1974-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-22 | 1977-12-22 | 1978-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-22 | 1981-12-22 | 1982-06-23 | $7700.00 | Window Closed / Lapsed |