Patent US3387608A successfully refreshed from Google Patents.
Patent US3243812A successfully refreshed from Google Patents.
US3243812A
Expired / Lapsed
US
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Radio ranging device
Assignee: Space-General Corp
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Filing: 1963-04-15
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Granted: 1966-03-29
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Expires: 1983-04-15
Abstract
No abstract record available.
Inventors
- 👤 Robert W Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:44
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/74; G01S13/82; G01S13/84
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
THE COMBINATION COMPRISING: FIRST MEANS FOR TRANSMITTING A WAVE OF VARIABLE WAVELENGTH FROM A FIRST STATION TO A SECOND STATION, THE WAVELENGTH OF SAID WAVE BEING DECREASED FROM AN INITIAL VALUE THAT IS GREATER THAN THE ROUND TRIP SIGNAL TRANSMISSION DISTANCE BETWEEN SAID FIRST AND SECOND STATIONS TO A FINAL VALUE THAT IS A FRACTION OF SAID DISTANCE; SECOND MEANS AT SAID SECOND STATION FOR RETURNING SAID WAVE TO SAID FIRST STATION; AND THIRD MEANS AT SAID FIRST STATION FOR DETERMINING THE ROUND TRIP SIGNAL TRANSMISSION DISTANCE BETWEEN SAID FIRST AND SECOND STATIONS IN TERMS OF THE FINAL NUMBER OF WAVELENGTHS PLUS ANY FRACTION THEREOF EXISTING BETWEEN SAID STATIONS.
Claim 2
Dependent Claim
109 words
THE COMBINATION COMPRISING: FIRST MEANS FOR TRANSMITTING A WAVE OF VARIABLE WAVELENGTH FROM A FIRST STATION TO A SECOND STATION, THE WAVELENGTH OF SAID WAVE BEING DECREASED FROM AN INITIAL VALUE THAT IS GREATER THAN THE ROUND TRIP SIGNAL TRANSMISSION DISTANCE BETWEEN SAID FIRST AND SECOND STATIONS TO A FINAL VALUE THAT IS A FRACTION OF SAID DISTANCE; SECOND MEANS AT SAID SECOND STATION FOR RETURNING SAID WAVE TO SAID FIRST STATION; AND THIRD MEANS AT SAID FIRST STATION FOR DETERMINING THE ROUND TRIP SIGNAL TRANSMISSION DISTANCE BETWEEN SAID FIRST AND SECOND STATIONS IN TERMS OF THE FINAL NUMBER OF WAVELENGTHS PLUS ANY FRACTION THEREOF EXISTING BETWEEN SAID STATIONS.
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) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |