US3482046A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-synchronous radio communication system and method
Assignee: SPX Technologies Inc
•
Filing: 1963-04-04
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Granted: 1969-12-02
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Expires: 1983-04-04
Abstract
No abstract record available.
Inventors
- 👤 J Donald Hughson
- 👤 Carl E Schwab
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:39
CPC Classifications
G; G08; G08C; G08C19/00; G08C19/12; G08C19/14; B; B61; B61L; B61L3/00; B61L3/02; B61L3/08; B61L3/12; B61L3/127; G08C15/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A METHOD OF COMMUNICATING INFORMATION FROM A TRANSMITTER TO A RECEIVER, COMPRISING THE STEPS OF GENERATING RANDOMLY RECURRING PULSES, MODULATING EACH PULSE WITH INFORMATION IN THE FORM OF TWO GROUPS OF MODULATING FREQUENCIES, TRANSMITTING THE MODULATED PULSES TO A RECEIVER, CHECKING THE PULSES RECEIVED BY THE RECEIVER FOR PRESENCE OF PREDETERMINED FREQUENCIES IN ONE GROUP OF MODULATING FREQUENCIES, AND PROVIDING AN OUTPUT CODE IN ACCORDANCE WITH THE PREDETERMINED FREQUENCIES IN THE OTHER GROUP OF MODULATING FREQUENCIES WHEN THE PROPER FREQUENCIES IN THE ONE GROUP OF MODULATING FREQUENCIES ARE PRESENT.
Claim 2
Independent Claim
89 words
A METHOD OF COMMUNICATING INFORMATION FROM A TRANSMITTER TO A RECEIVER, COMPRISING THE STEPS OF GENERATING RANDOMLY RECURRING PULSES, MODULATING EACH PULSE WITH INFORMATION IN THE FORM OF TWO GROUPS OF MODULATING FREQUENCIES, TRANSMITTING THE MODULATED PULSES TO A RECEIVER, CHECKING THE PULSES RECEIVED BY THE RECEIVER FOR PRESENCE OF PREDETERMINED FREQUENCIES IN ONE GROUP OF MODULATING FREQUENCIES, AND PROVIDING AN OUTPUT CODE IN ACCORDANCE WITH THE PREDETERMINED FREQUENCIES IN THE OTHER GROUP OF MODULATING FREQUENCIES WHEN THE PROPER FREQUENCIES IN THE ONE GROUP OF MODULATING FREQUENCIES ARE PRESENT.
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) | 1972-12-01 | 1973-06-02 | 1973-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-01 | 1977-06-02 | 1977-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-01 | 1981-06-02 | 1981-12-02 | $7700.00 | Window Closed / Lapsed |