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Patent US3400375A successfully refreshed from Google Patents.
US3400375A
Expired / Lapsed
US
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Universal code synchronous transmitter-receiver device
Assignee: International Business Machines Corp
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Filing: 1965-08-12
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Granted: 1968-09-03
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Expires: 1985-08-12
Abstract
No abstract record available.
Inventors
- 👤 Raymond E Bowling
- 👤 George J Laurer
- 👤 Orville D Montgomery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:08
CPC Classifications
G; G06; G06F; G06F13/00; G06F13/38; G06F13/382; G06F13/385; G06F13/387
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
A DATA MESSAGE COMMUNICATION SYSTEM COMPRISING: (A) A MAIN DATA TERMINAL, (B) A PLURALITY OF REMOTE TERMINALS CMMUNICATIVELY COUPLED WITH SAID MAIN DATA TERMINAL VIA COMMUNICATION CHANNELS, (C) PROGRAM CONTROLLED MEANS AT SAID MAIN DATA TERMINAL FOR SELECTIVELY RENDERING ONE OF SAID REMOTE TERMINAL OPERATIVE TO RECEIVE DATA MESSAGES, (D) A DATA CHARACTER REGISTER COUPLED WITH THE COMMUNICATION CHANNELS, (E) MESSAGE CHARACTER GENERATING MEANS AT SAID MAIN DATA TERMINAL, (F) A COMPARTMENTALIZED CHARACTER STORING MEDIUM FOR STORING MESSAGE CHARACTER EQUIVALENTS ACCORDING TO A LINE CODE, (G) STORAGE ADDRESS MEANS SEQUENTIALLY RESPONSIVE TO THE MESSAGE CHARACTERS FOR ADDRESSING LOCATIONS IN SAID CHARACTER STORING MEDIUM AND CAUSING CHARACTER EQUIVALENTS DATA TO BE READ OUT OF SAME TO SAID DATA CHARACTER REGISTER, AND (H) MEANS TO TRANSFER THE DATA OUT OF SAID DATA CHARACTER REGISTER TO THE COMMUNICATION CHANNELS FOR TRANSMISSION TO THE OPERATIVE REMOTE TERMINAL.
Claim 2
Dependent Claim
143 words
A DATA MESSAGE COMMUNICATION SYSTEM COMPRISING: (A) A MAIN DATA TERMINAL, (B) A PLURALITY OF REMOTE TERMINALS CMMUNICATIVELY COUPLED WITH SAID MAIN DATA TERMINAL VIA COMMUNICATION CHANNELS, (C) PROGRAM CONTROLLED MEANS AT SAID MAIN DATA TERMINAL FOR SELECTIVELY RENDERING ONE OF SAID REMOTE TERMINAL OPERATIVE TO RECEIVE DATA MESSAGES, (D) A DATA CHARACTER REGISTER COUPLED WITH THE COMMUNICATION CHANNELS, (E) MESSAGE CHARACTER GENERATING MEANS AT SAID MAIN DATA TERMINAL, (F) A COMPARTMENTALIZED CHARACTER STORING MEDIUM FOR STORING MESSAGE CHARACTER EQUIVALENTS ACCORDING TO A LINE CODE, (G) STORAGE ADDRESS MEANS SEQUENTIALLY RESPONSIVE TO THE MESSAGE CHARACTERS FOR ADDRESSING LOCATIONS IN SAID CHARACTER STORING MEDIUM AND CAUSING CHARACTER EQUIVALENTS DATA TO BE READ OUT OF SAME TO SAID DATA CHARACTER REGISTER, AND (H) MEANS TO TRANSFER THE DATA OUT OF SAID DATA CHARACTER REGISTER TO THE COMMUNICATION CHANNELS FOR TRANSMISSION TO THE OPERATIVE REMOTE TERMINAL.
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) | 1971-09-03 | 1972-03-04 | 1972-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-03 | 1976-03-04 | 1976-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-03 | 1980-03-04 | 1980-09-03 | $7700.00 | Window Closed / Lapsed |