US2582967A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Marker-controlled final selector circuit
Assignee: International Standard Electric Corp
•
Filing: 1947-07-01
•
Granted: 1952-01-22
•
Expires: 1967-07-01
Abstract
No abstract record available.
Inventors
- 👤 Raedt Egide Jacob Hendrik De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:08
CPC Classifications
H; H04; H04Q; H04Q3/00; H04Q3/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1343903A
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FR712328A
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US1840950A
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US1922237A
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US1914384A
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GB392280A
Cited
US2057890A
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US2087405A
Cited
US2172947A
Cited
FR811704A
Cited
GB563668A
Cited
US2354682A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-21 | 1955-07-23 | 1956-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-21 | 1959-07-23 | 1960-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-21 | 1963-07-23 | 1964-01-22 | $7700.00 | Window Closed / Lapsed |