US3179937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-dimensional electromagnetic delay line
Assignee: Individual
•
Filing: 1960-06-21
•
Granted: 1965-04-20
•
Expires: 1980-06-21
Abstract
No abstract record available.
Inventors
- 👤 Frank R Abbott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:13
CPC Classifications
H; H01; H01P; H01P9/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
108 words
A BROADBAND RADIO SYSTEM COMPRISING IN COMBINATION, MEANS FOR TIMELY TRANSMITTING AND RECEIVING A PLURALITY OF ELECTROMAGNETIC SIGNALS TO AND FROM A PREDETERMINED DISTANCE FROM THE SURFACE OF THE EARTH, MEANS COUPLED TO SAID TRANSMITTING AND RECEIVING MEANS FOR EFFECTING A MINIATURE PATTERN OF THE ELECTROMAGNETIC SIGNALS TRANSMITTED AND RECEIVED THEREFROM, MEANS CONNECTED TO SAID MINIATURE PATTERN EFFECTING MEANS FOR TIMELY GENERATING AND SUPPLYING SAID ELECTROMAGNETIC SIGNALS THERETO AND FOR RECEIVING SAID ELECTROMAGNETIC SIGNALS THEREFROM A PREDETERMINED TIME PRIOR TO TRANSMISSION THEREOF BY SAID TRANSMITTING AND RECEIVING MEANS AND SUBSEQUENT TO THE RECEPTION THEREOF BY SAID TRANSMITTING AND RECEIVING MEANS RESPECTIVELY, AND MEANS COUPLED TO SAID LAST MENTIONED
References Cited (Backward Citations)
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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) | 1968-04-19 | 1968-10-19 | 1969-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-19 | 1972-10-19 | 1973-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-19 | 1976-10-19 | 1977-04-20 | $7700.00 | Window Closed / Lapsed |