Patent US4824802A successfully refreshed from Google Patents.
US3453166A
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Method and apparatus for bonding transducer elements
Assignee: AT&T Inc
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Filing: 1966-10-11
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Granted: 1969-07-01
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Expires: 1986-10-11
Abstract
No abstract record available.
Inventors
- 👤 Donald R Herriott
- 👤 Joseph S Jones
- 👤 Thrygve R Mecker
- 👤 Kurt Reznicek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:48
CPC Classifications
H; H03; H03H; H03H3/00; H03H3/007; H10; H10N; H10N30/00; H10N30/01; H10N30/07; H10N30/072; H10N30/073
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1206656A
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US1384498A
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US2357867A
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US2589403A
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US2519661A
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US2531660A
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US2639257A
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US2956789A
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US3025419A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-30 | 1972-12-30 | 1973-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-30 | 1976-12-30 | 1977-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-30 | 1980-12-30 | 1981-07-01 | $7700.00 | Window Closed / Lapsed |