US2647172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: LE TELEAMPLIPHONE SOC
•
Filing: 1948-06-11
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Granted: 1953-07-28
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Expires: 1968-06-11
Abstract
No abstract record available.
Inventors
- 👤 Jeanlin Pierre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:28
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/51; H03K17/54; H04; H04M; H04M9/00; H04M9/001
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2199179A
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US2452549A
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US2282405A
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US2356071A
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US2370388A
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US2453529A
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US2428126A
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US2485477A
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US2457790A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-27 | 1957-01-26 | 1957-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-27 | 1961-01-26 | 1961-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-27 | 1965-01-26 | 1965-07-28 | $7700.00 | Window Closed / Lapsed |