Patent US3524935A successfully refreshed from Google Patents.
US3524935A
Expired / Lapsed
US
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Data transmission subset with mode indicating and selection means
Assignee: Automatic Electric Laboratories Inc
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Filing: 1967-12-19
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Granted: 1970-08-18
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Expires: 1987-12-19
Abstract
No abstract record available.
Inventors
- 👤 Leonard E Gonsewski
- 👤 Richard A Morstadt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:02
CPC Classifications
H; H04; H04M; H04M11/00; H04M11/06
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) | 1973-08-17 | 1974-02-16 | 1974-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-17 | 1978-02-16 | 1978-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-17 | 1982-02-16 | 1982-08-18 | $7700.00 | Window Closed / Lapsed |