US2793253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telegraphone recording and reproducing system
Assignee: Individual
•
Filing: 1950-10-20
•
Granted: 1957-05-21
•
Expires: 1970-10-20
Abstract
No abstract record available.
Inventors
- 👤 Winfield S Brooks
- 👤 James P Murphy
- 👤 Edwin M Howey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:28
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/64; H04M1/65; H04M1/6515; G; G11; G11B; G11B15/00; G11B15/02; G11B15/05; G11B15/06; G11B15/18; G11B15/44; G11B5/00; G11B5/127; G11B5/265; G11B5/29
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2069632A
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US2328539A
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US2500903A
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US2536030A
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US2549548A
Cited
US2560254A
Cited
US2661397A
Cited
US2547737A
Cited
US2524063A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-05-20 | 1960-11-19 | 1961-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-20 | 1964-11-19 | 1965-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-20 | 1968-11-19 | 1969-05-21 | $7700.00 | Window Closed / Lapsed |