US3349175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for synchronizing cryptographic teleprinter equipment
Assignee: International Standard Electric Corp
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Filing: 1964-01-06
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Granted: 1967-10-24
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Expires: 1984-01-06
Abstract
No abstract record available.
Inventors
- 👤 Meisingset Kare Ragnar
- 👤 Mo Ivar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:41
CPC Classifications
H; H04; H04L; H04L9/00; H04L9/12; H04L9/08; H04L9/0891
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
METHOD FOR SYNCHRONIZING CRYPTOGRAPHIC TELEPRINTER EQUIPMENT COMPRISING THE ENCIPHERING OF A PLAIN TEXT AT THE TRANSMITTING END BY PROCESSING IT WITH A KEY MATERIAL ACCORDING TO SOME PREDETERMINED RULE, AND RECOVERING THE PLAIN TEXT AT THE RECEIVING END BY PROCESSING THE ENCIPHERED TEXT WITH A DUPLICATE OF THE SAID KEY MATERIAL, CHARACTERIZED IN THIS THAT THE START PULSE TIME POSITIONS AND/OR STOP PULSE TIME POSITIONS OF THE ENCIPHERED TELEPRINTER CHARACTERS ARE USE FOR TRANSMITTING INFORMATION IN FORM OF A SERIAL NUMBER INDICATING THE SETTING OF SAID KEY MATERIAL IN RELATION TO A PREDETERMINED STARTING TIME POSITION.
Claim 2
Dependent Claim
96 words
METHOD FOR SYNCHRONIZING CRYPTOGRAPHIC TELEPRINTER EQUIPMENT COMPRISING THE ENCIPHERING OF A PLAIN TEXT AT THE TRANSMITTING END BY PROCESSING IT WITH A KEY MATERIAL ACCORDING TO SOME PREDETERMINED RULE, AND RECOVERING THE PLAIN TEXT AT THE RECEIVING END BY PROCESSING THE ENCIPHERED TEXT WITH A DUPLICATE OF THE SAID KEY MATERIAL, CHARACTERIZED IN THIS THAT THE START PULSE TIME POSITIONS AND/OR STOP PULSE TIME POSITIONS OF THE ENCIPHERED TELEPRINTER CHARACTERS ARE USE FOR TRANSMITTING INFORMATION IN FORM OF A SERIAL NUMBER INDICATING THE SETTING OF SAID KEY MATERIAL IN RELATION TO A PREDETERMINED STARTING TIME POSITION.
References Cited (Backward Citations)
US2924658A
Cited
US3185765A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-23 | 1971-04-24 | 1971-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-23 | 1975-04-24 | 1975-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-23 | 1979-04-24 | 1979-10-24 | $7700.00 | Window Closed / Lapsed |