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US2895104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Test set
Assignee: AT&T Inc
•
Filing: 1955-01-25
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Granted: 1959-07-14
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Expires: 1975-01-25
Abstract
No abstract record available.
Inventors
- 👤 Lloyd D Hansen
- 👤 Theodore L Hordosi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:04
CPC Classifications
H; H04; H04M; H04M3/00; H04M3/22; H04M3/26; H04M3/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2390778A
Cited
US2651752A
Cited
US2707267A
Cited
US2627540A
Cited
US2663844A
Cited
US2690477A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-07-13 | 1963-01-12 | 1963-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-13 | 1967-01-12 | 1967-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-13 | 1971-01-12 | 1971-07-14 | $7700.00 | Window Closed / Lapsed |