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US2576189A
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Automatic multiple dialing apparatus
Assignee: ILE DES BREVETS O B SOC CIV
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Filing: 1948-12-21
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Granted: 1951-11-27
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Expires: 1968-12-21
Abstract
No abstract record available.
Inventors
- 👤 Olliver Charles Wolfran
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:45
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/26; H04M1/27; H04M1/274; H04M1/272
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1237234A
Cited
US1725134A
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US1752211A
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GB397456A
Cited
US2134626A
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US2199443A
Cited
US2434959A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-26 | 1955-05-28 | 1955-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-26 | 1959-05-28 | 1959-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-26 | 1963-05-28 | 1963-11-27 | $7700.00 | Window Closed / Lapsed |