US3719808A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Linear digital-to-analog converter
Assignee: HENDAILLE IND Inc
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Filing: 1971-02-22
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Granted: 1973-03-06
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Expires: 1991-02-22
Abstract
Abstract A NUMERICAL CONTROL SYSTEM HAVING A REVERSIBLE BINARY COUNTER AND ASSOCIATED DIGITAL TO ANALOG CONVERTER STAGES WHEREIN COMMAND NUMBERS ARE LOADED INTO THE COUNTER IN TWO''S COMPLEMENT BINARY NOTATION BUT WHEREIN THE SIGN REPRESENTING COUNTER STAGE DRIVES ITS CONVERTER STAGE TO PROVIDE AN INCREMENT OF ANALOG OUTPUT IN RESPONSE TO A POSITIVE COMMAND NUMBER TO PROVIDE A LINEAR ANALOG OUTPUT IN THE VICINITY OF ZERO COUNT. D R A W I N G
Inventors
- 👤 F Booth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:06
CPC Classifications
H; H03; H03M; H03M1/00; G; G05; G05B; G05B19/00; G05B19/02; G05B19/18; G05B19/19; G05B19/21; G05B19/23; G05B19/231; G05B19/414; G05B2219/00; G05B2219/30; G05B2219/33; G05B2219/33099; G05B2219/35; G05B2219/35436; G05B2219/37; G05B2219/37175; G05B2219/42; G05B2219/42213; G05B2219/42215; H03M1/12; H03M1/48
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-05 | 1976-09-04 | 1977-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-05 | 1980-09-04 | 1981-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-05 | 1984-09-04 | 1985-03-06 | $7700.00 | Window Closed / Lapsed |