Patent US3400341A successfully refreshed from Google Patents.
US3400341A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elastic dispersive delay line
Assignee: AT&T Inc
•
Filing: 1966-03-08
•
Granted: 1968-09-03
•
Expires: 1986-03-08
Abstract
No abstract record available.
Inventors
- 👤 Erhard K Sittig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:14
CPC Classifications
H; H03; H03H; H03H9/00; H03H9/30; H03H9/40; E; E04; E04H; E04H12/00; E04H12/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A DISPERSIVE, ELASTIC WAVE DELAY LINE COMPRISING: AN ELASTIC WAVE PROPAGATION MEDIUM; MEANS LOCATED AT ONE END OF SAID MEDIUM FOR LAUNCHING AN ELASTIC WAVE THEREIN IN A GIVEN DIRECTION AND FOR EXTRACTING THEREFROM REFLECTED WAVE ENERGY; AND REACTIVE DISCONTINUITIES DISPOSED ALONG SAID MEDIUM IN SAID GIVEN DIRECTION FOR REFLECTING PORTIONS OF SAID WAVE ENERGY TOWARDS SAID ONE END; SAID DISCONTINUITIES ARRANGED TO REFLECT SIGNAL COMPONENTS AT DIFFERENT FREQUENCIES FROM DIFFERENT LOCATIONS ALONG SAID MEDIUM.
Claim 2
Dependent Claim
75 words
A DISPERSIVE, ELASTIC WAVE DELAY LINE COMPRISING: AN ELASTIC WAVE PROPAGATION MEDIUM; MEANS LOCATED AT ONE END OF SAID MEDIUM FOR LAUNCHING AN ELASTIC WAVE THEREIN IN A GIVEN DIRECTION AND FOR EXTRACTING THEREFROM REFLECTED WAVE ENERGY; AND REACTIVE DISCONTINUITIES DISPOSED ALONG SAID MEDIUM IN SAID GIVEN DIRECTION FOR REFLECTING PORTIONS OF SAID WAVE ENERGY TOWARDS SAID ONE END; SAID DISCONTINUITIES ARRANGED TO REFLECT SIGNAL COMPONENTS AT DIFFERENT FREQUENCIES FROM DIFFERENT LOCATIONS ALONG SAID MEDIUM.
References Cited (Backward Citations)
US3264583A
Cited
US3277404A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-03 | 1972-03-04 | 1972-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-03 | 1976-03-04 | 1976-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-03 | 1980-03-04 | 1980-09-03 | $7700.00 | Window Closed / Lapsed |