US2999227A
Expired / Lapsed
US
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Circuit arrangement for the transmission of signal pulses according to the voltage-comparison method
Assignee: International Standard Electric Corp
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Filing: 1957-07-24
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Granted: 1961-09-05
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Expires: 1977-07-24
Abstract
No abstract record available.
Inventors
- 👤 Hezel Alois
- 👤 Weisser Wolfgang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:15
CPC Classifications
H; H04; H04Q; H04Q3/00; H04M; H04M1/00; H04M1/26; H04M1/515; H04Q1/00; H04Q1/18; H04Q1/30; H04Q1/38; H04Q1/44; H04Q1/444; H04Q1/45; H04Q1/453
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-04 | 1965-03-06 | 1965-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-04 | 1969-03-06 | 1969-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-04 | 1973-03-06 | 1973-09-05 | $7700.00 | Window Closed / Lapsed |