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US3051783A
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US
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Apparatus for enciphering-deciphering teleprinter communications
Assignee: Dr-Ing Rudolf Hell KG
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Filing: 1959-06-17
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Granted: 1962-08-28
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Expires: 1979-06-17
Abstract
No abstract record available.
Inventors
- 👤 Hell Rudolf
- 👤 Koll Roman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:41
CPC Classifications
G; G06; G06F; G06F7/00; G06F7/58; G06F7/582; G06F7/586; Y; Y10; Y10T; Y10T24/00; Y10T24/15; Y10T24/152
Claims Analysis
Total Claims: 0
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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) | 1965-08-27 | 1966-02-26 | 1966-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-27 | 1970-02-26 | 1970-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-27 | 1974-02-26 | 1974-08-28 | $7700.00 | Window Closed / Lapsed |