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US2770675A
Expired / Lapsed
US
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Tape movement check in a telegraph system
Assignee: Automatic Electric Laboratories Inc
•
Filing: 1953-10-26
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Granted: 1956-11-13
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Expires: 1973-10-26
Abstract
No abstract record available.
Inventors
- 👤 Johnston Leith
- 👤 Harold J Mccreary
- 👤 Richard C Stiles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:12
CPC Classifications
H; H04; H04L; H04L13/00; H04L13/02; H04L13/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2160463A
Cited
US2142880A
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US2293704A
Cited
DE827082C
Cited
US2554549A
Cited
US2640873A
Cited
US2708216A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-13 | 1960-05-14 | 1960-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-13 | 1964-05-14 | 1964-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-13 | 1968-05-14 | 1968-11-13 | $7700.00 | Window Closed / Lapsed |