US3508002A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telephone line transmission data system
Assignee: TDK Micronas GmbH
•
Filing: 1966-05-13
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Granted: 1970-04-21
•
Expires: 1986-05-13
Abstract
No abstract record available.
Inventors
- 👤 Werner Hauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:49
CPC Classifications
H; H04; H04M; H04M11/00; H04M11/06; G; G06; G06F; G06F3/00; G06F3/002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2186899A
Cited
US2903517A
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US3084213A
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US3037074A
Cited
US3242470A
Cited
US3376509A
Cited
US3351929A
Cited
US3401396A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-04-20 | 1973-10-20 | 1974-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-20 | 1977-10-20 | 1978-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-20 | 1981-10-20 | 1982-04-21 | $7700.00 | Window Closed / Lapsed |