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US2763728A
Expired / Lapsed
US
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Automatic dialing device
Assignee: Individual
•
Filing: 1954-06-25
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Granted: 1956-09-18
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Expires: 1974-06-25
Abstract
No abstract record available.
Inventors
- 👤 Demeulenacre Marcel Antoine
- 👤 Demeulenaere Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:35
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/26; H04M1/27; H04M1/274
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2060371A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-18 | 1960-03-19 | 1960-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-18 | 1964-03-19 | 1964-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-18 | 1968-03-19 | 1968-09-18 | $7700.00 | Window Closed / Lapsed |