US3458809A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual-slope analog-to-digital converters
Assignee: Gemalto Terminals Ltd
•
Filing: 1965-08-23
•
Granted: 1969-07-29
•
Expires: 1985-08-23
Abstract
No abstract record available.
Inventors
- 👤 Howard A Dorey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:08
CPC Classifications
H; H03; H03M; H03M1/00; H03M1/12; H03M1/50; H03M1/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2979708A
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US3087147A
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US3140479A
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US3188455A
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US3237190A
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US3296613A
Cited
US3316547A
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US3368149A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-28 | 1973-01-27 | 1973-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-28 | 1977-01-27 | 1977-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-28 | 1981-01-27 | 1981-07-29 | $7700.00 | Window Closed / Lapsed |