Patent US2787659A successfully refreshed from Google Patents.
US2787659A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination telephone and dictation system
Assignee: TDK Micronas GmbH
•
Filing: 1955-05-20
•
Granted: 1957-04-02
•
Expires: 1975-05-20
Abstract
No abstract record available.
Inventors
- 👤 Horwitz Henry Leopold
- 👤 Homan Merle Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:12
CPC Classifications
H; H04; H04M; H04M11/00; H04M11/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2200351A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-01 | 1960-10-01 | 1961-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-01 | 1964-10-01 | 1965-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-01 | 1968-10-01 | 1969-04-02 | $7700.00 | Window Closed / Lapsed |