US2655558A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telephone pay station adapter common to a plurality of lines
Assignee: Stromberg Carlson Corp
•
Filing: 1949-06-17
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Granted: 1953-10-13
•
Expires: 1969-06-17
Abstract
No abstract record available.
Inventors
- 👤 Kessler Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:15
CPC Classifications
H; H04; H04M; H04M17/00; H04M17/02; H04M17/023
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1963929A
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US2106360A
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US2214213A
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US2226731A
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US2367769A
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US2385720A
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US2336866A
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US2374964A
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US2471087A
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US2558571A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-12 | 1957-04-13 | 1957-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-12 | 1961-04-13 | 1961-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-12 | 1965-04-13 | 1965-10-13 | $7700.00 | Window Closed / Lapsed |