US2539139A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telephone system for automatic answering, recording messages, and recording normal conversations
Assignee: JORDAPHONE Corp OF AMERICA
•
Filing: 1949-07-14
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Granted: 1951-01-23
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Expires: 1969-07-14
Abstract
No abstract record available.
Inventors
- 👤 Jordanoff Assen
- 👤 Robin Norman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:43
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/64; H04M1/65; H04M1/654; H04M1/6545
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1560226A
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US1738551A
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US1778980A
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US1845034A
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US1993486A
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US2005788A
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US2093675A
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US2282100A
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US2374842A
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US2393272A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-22 | 1954-07-24 | 1955-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-22 | 1958-07-24 | 1959-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-22 | 1962-07-24 | 1963-01-23 | $7700.00 | Window Closed / Lapsed |