US2653192A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telephone apparatus
Assignee: Individual
•
Filing: 1949-01-07
•
Granted: 1953-09-22
•
Expires: 1969-01-07
Abstract
No abstract record available.
Inventors
- 👤 Shipton Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:03
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/26; H04M1/52; H04M1/02; H04M1/03
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1181947A
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US1432623A
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FR732906A
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US2079089A
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US2109761A
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US2214992A
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US2131593A
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US2224698A
Cited
US2490637A
Cited
US2433295A
Cited
US2497336A
Cited
US2506715A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-21 | 1957-03-23 | 1957-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-21 | 1961-03-23 | 1961-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-21 | 1965-03-23 | 1965-09-22 | $7700.00 | Window Closed / Lapsed |