Patent US3405374A successfully refreshed from Google Patents.
US3405374A
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US
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Ultrahigh frequency phonon generator and related devices
Assignee: AT&T Inc
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Filing: 1966-10-12
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Granted: 1968-10-08
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Expires: 1986-10-12
Abstract
No abstract record available.
Inventors
- 👤 Aly H Dayem
- 👤 Wolfgang F Eisenmenger
- 👤 Barry I Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:56
CPC Classifications
B; B06; B06B; B06B1/00; B06B1/02; B06B1/04; H; H03; H03F; H03F13/00; H03H; H03H9/00; H03H9/30; Y; Y10; Y10S; Y10S505/00; Y10S505/825; Y10S505/866
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-08 | 1972-04-08 | 1972-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-08 | 1976-04-08 | 1976-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-08 | 1980-04-08 | 1980-10-08 | $7700.00 | Window Closed / Lapsed |