Patent US1206987A successfully refreshed from Google Patents.
US1206987A
Expired / Lapsed
US
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Dictating phonograph system.
Assignee: AT&T Inc
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Filing: 1914-11-14
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Granted: 1916-12-05
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Expires: 1934-11-14
Abstract
No abstract record available.
Inventors
- 👤 Henry P Clausen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:51
CPC Classifications
H; H04; H04M; H04M11/00; H04M11/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1919-12-05 | 1920-06-05 | 1920-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1923-12-05 | 1924-06-05 | 1924-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1927-12-05 | 1928-06-05 | 1928-12-05 | $7700.00 | Window Closed / Lapsed |