Patent US3465302A successfully refreshed from Google Patents.
US3465302A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Buffered teletypewriter device
Assignee: International Business Machines Corp
•
Filing: 1967-03-21
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Granted: 1969-09-02
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Expires: 1987-03-21
Abstract
No abstract record available.
Inventors
- 👤 Donald R Andrews
- 👤 Eliott D James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:17
CPC Classifications
H; H04; H04L; H04L13/00; H04L13/02; H04L13/08; H04L17/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2960683A
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US3046528A
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US3200379A
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US3311889A
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US3333250A
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US3293618A
Cited
US3312950A
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US3340515A
Cited
US3348209A
Cited
US3328766A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-01 | 1973-03-03 | 1973-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-01 | 1977-03-03 | 1977-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-01 | 1981-03-03 | 1981-09-02 | $7700.00 | Window Closed / Lapsed |