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US3471242A
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US
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Densitometer analog-to-digital converter system
Assignee: GAF Corp
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Filing: 1966-02-18
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Granted: 1969-10-07
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Expires: 1986-02-18
Abstract
No abstract record available.
Inventors
- 👤 Gordon W Nichols
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:24
CPC Classifications
H; H03; H03M; H03M1/00; H03M1/12; H03M1/60; G; G01; G01N; G01N21/00; G01N21/17; G01N21/25; G01N21/27; G01N21/59; G01N21/5907; G01N21/84; G01N21/86
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3069013A
Cited
US3367230A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-06 | 1973-04-07 | 1973-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-06 | 1977-04-07 | 1977-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-06 | 1981-04-07 | 1981-10-07 | $7700.00 | Window Closed / Lapsed |