Patent US3457543A successfully refreshed from Google Patents.
US3457543A
Expired / Lapsed
US
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Transducer for producing two coaxial beam patterns of different frequencies
Assignee: Honeywell Inc
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Filing: 1968-02-26
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Granted: 1969-07-22
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Expires: 1988-02-26
Abstract
No abstract record available.
Inventors
- 👤 Orrill L Akervold
- 👤 William J Kutny Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:31
CPC Classifications
G; G10; G10K; G10K11/00; G10K11/18; G10K11/26; G10K11/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2732536A
Cited
US2427062A
Cited
US2451967A
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US2767387A
Cited
US2922140A
Cited
US2956184A
Cited
US3277451A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-21 | 1973-01-20 | 1973-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-21 | 1977-01-20 | 1977-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-21 | 1981-01-20 | 1981-07-22 | $7700.00 | Window Closed / Lapsed |