US3228337A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio frequency free communication system
Assignee: Individual
•
Filing: 1962-12-04
•
Granted: 1966-01-11
•
Expires: 1982-12-04
Abstract
No abstract record available.
Inventors
- 👤 Rodney E Grantham
- 👤 Stimler Morton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:44
CPC Classifications
F; F42; F42C; F42C17/00; F42C17/04; H; H04; H04B; H04B10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A LASER LIGHT WAVE COMMUNICATIONS RECEIVER COMPRISING: A CLOSED CONDUCTIVE ENCLOSURE FOR COLLECTING AND ABSORBING RADIO FREQUENCY VOLTAGES, A WAVEGUIDE MEANS INSERTED INTO AND FORMING AN APERTURE IN SAID CONDUCTIVE ENCLOSURE FOR PASSING ONLY ELECTROMAGNETIC WAVE LENGTHS ABOVE THE RADIO FREQUENCY SPECTRUM, AN OPTICAL FILTER MEANS INSERTED INTO SAID WAVE GUIDE MEANS AND CLOSING THE APERTURE FOR PASSING PREDETERMINED WAVELENGHTS OF LIGHT, AND A DETECTOR MEANS INSERTED INTO SAID WAVE GUIDE AND WITHIN THE ENCLOSURE FOR DETECTING THE LIGHT WAVES PASSED BY SAID FILTER MEANS.
Claim 2
Dependent Claim
85 words
A LASER LIGHT WAVE COMMUNICATIONS RECEIVER COMPRISING: A CLOSED CONDUCTIVE ENCLOSURE FOR COLLECTING AND ABSORBING RADIO FREQUENCY VOLTAGES, A WAVEGUIDE MEANS INSERTED INTO AND FORMING AN APERTURE IN SAID CONDUCTIVE ENCLOSURE FOR PASSING ONLY ELECTROMAGNETIC WAVE LENGTHS ABOVE THE RADIO FREQUENCY SPECTRUM, AN OPTICAL FILTER MEANS INSERTED INTO SAID WAVE GUIDE MEANS AND CLOSING THE APERTURE FOR PASSING PREDETERMINED WAVELENGHTS OF LIGHT, AND A DETECTOR MEANS INSERTED INTO SAID WAVE GUIDE AND WITHIN THE ENCLOSURE FOR DETECTING THE LIGHT WAVES PASSED BY SAID FILTER MEANS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-10 | 1969-07-12 | 1970-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-10 | 1973-07-12 | 1974-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-10 | 1977-07-12 | 1978-01-11 | $7700.00 | Window Closed / Lapsed |