US2955279A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: AT&T Inc
•
Filing: 1955-02-11
•
Granted: 1960-10-04
•
Expires: 1975-02-11
Abstract
No abstract record available.
Inventors
- 👤 Hendrik W Bode
- 👤 Herbert J Mcskimin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:28
CPC Classifications
H; H04; H04W; H04W88/00; H04W88/02; H04W88/022; H04W88/025; H04W88/028
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB197503A
Cited
US2449819A
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US2522609A
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US2617873A
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US2495740A
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US2706810A
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US2570279A
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US2589130A
Cited
US2670463A
Cited
US2600648A
Cited
US2800254A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-04 | 1964-04-04 | 1964-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-04 | 1968-04-04 | 1968-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-04 | 1972-04-04 | 1972-10-04 | $7700.00 | Window Closed / Lapsed |