US3295064A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrasonic pulse modifier
Assignee: AT&T Inc
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Filing: 1962-06-20
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Granted: 1966-12-27
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Expires: 1982-06-20
Abstract
No abstract record available.
Inventors
- 👤 Donald L White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:06
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03H; H03H9/00; H03H9/30; H03H9/38
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
118 words
IN COMBINATION, A SOURCE OF PULSES OF ULTRASONIC WAVE ENERGY, A PROPAGATION MEDIUM INCLUDING A SECTION OF ULTRASONIC DELAY LINE OF CONSTANT VELOCITY OF PROPAGATION, ULTRASONIC TRANSDUCERS FOR APPLYING SAID PULSES TO SAID MEDIUM FOR PROPAGATION THEREALONG AND FOR RECEIVING SAID PULSES FROM SAID MEDIUM, MEANS FOR PERIODICALLY DISABLING SAID TRANSDUCERS TO PRODUCE MULTIPLE REFLECTIONS OF SAID PULSES THROUGH SAID MEDIUM, AND MEANS SYNCHRONIZED WITH SAID PULSES AND THEIR PROPAGATION THROUGH SAID MEDIUM FOR CHANGING THE PROGAGTION VELOCITY OF A PORTION OF SAID MEDIUM ADJACENT TO SAID SECTION IN A GIVEN DIRECTION WHILE ONE OF SAID PULSES IS CONTAINED WITHIN SAID PORTION AND IN A DIRECTION OPPOSITE TO SAID GIVEN DIRECTION WHEN SAID PULSE HAS LEFT SAID PORTION.
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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) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |