Patent US3330909A successfully refreshed from Google Patents.
US3330909A
Expired / Lapsed
US
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Pulse communication system
Assignee: AT&T Inc
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Filing: 1964-01-02
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Granted: 1967-07-11
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Expires: 1984-01-02
Abstract
No abstract record available.
Inventors
- 👤 Frank E Willson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:17
CPC Classifications
H; H04; H04B; H04B14/00; H04B14/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A PULSE TRANSMISSION SYSTEM FOR CONVEYING SIGNALS UNIQUELY REPRESENTATIVE OF DISTINCTIVE CODE LEVELS IN AN ENCODED MESSAGE, SAID SYSTEM COMPRISING MEANS RESPONSIVE TO SAID SIGNALS TO TRANSMIT A PULSE OF ENERGY AT A FIRST FREQUENCY ONLY FOR EACH EVEN NUMBERED SIGNALS IN EACH SEQUENCE WHERE ANY ONE OF SAID SIGNALS IS REPEATED MORE THAN ONCE AND PULSES OF ENERGY AT OTHER FREQUENCIES UNIQUELY RELATED TO THE TYPES OF SAID SIGNALS FOR ALL THE REMAINDER OF SAID SIGNALS, RESPECTIVELY, A RECEIVER FOR RECEIVING SAID TRANSMITTED PULSES, AND MEANS FOR PRODUCING SIGNALS UNIQUELY REPRESENTATIVE OF
Claim 2
Dependent Claim
93 words
A PULSE TRANSMISSION SYSTEM FOR CONVEYING SIGNALS UNIQUELY REPRESENTATIVE OF DISTINCTIVE CODE LEVELS IN AN ENCODED MESSAGE, SAID SYSTEM COMPRISING MEANS RESPONSIVE TO SAID SIGNALS TO TRANSMIT A PULSE OF ENERGY AT A FIRST FREQUENCY ONLY FOR EACH EVEN NUMBERED SIGNALS IN EACH SEQUENCE WHERE ANY ONE OF SAID SIGNALS IS REPEATED MORE THAN ONCE AND PULSES OF ENERGY AT OTHER FREQUENCIES UNIQUELY RELATED TO THE TYPES OF SAID SIGNALS FOR ALL THE REMAINDER OF SAID SIGNALS, RESPECTIVELY, A RECEIVER FOR RECEIVING SAID TRANSMITTED PULSES, AND MEANS FOR PRODUCING SIGNALS UNIQUELY REPRESENTATIVE OF
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) | 1970-07-10 | 1971-01-09 | 1971-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-10 | 1975-01-09 | 1975-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-10 | 1979-01-09 | 1979-07-11 | $7700.00 | Window Closed / Lapsed |