Patent US3428892A successfully refreshed from Google Patents.
US3428892A
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Electronic olfactory detector having organic semiconductor barrier layer structure
Assignee: JAMES E MEINHARD
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Filing: 1965-09-20
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Granted: 1969-02-18
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Expires: 1985-09-20
Abstract
No abstract record available.
Inventors
- 👤 James E Meinhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:19
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/51; H03K17/78; G; G01; G01N; G01N27/00; G01N27/02; G01N27/04; G01N27/12; G01N27/125; G01N27/126; H01; H01B; H01B1/00; H01B1/06; H01B1/12; H01B1/121
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) | 1972-02-18 | 1972-08-19 | 1973-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-18 | 1976-08-19 | 1977-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-18 | 1980-08-19 | 1981-02-18 | $7700.00 | Window Closed / Lapsed |