US3455657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame ionization detector
Assignee: PE Manufacturing GmbH
•
Filing: 1966-06-09
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Granted: 1969-07-15
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Expires: 1986-06-09
Abstract
No abstract record available.
Inventors
- 👤 Dietrich Jentzsch
- 👤 Klaus Kuhne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:45
CPC Classifications
F; F23; F23M; F23M11/00; F23M11/04; F23M11/045; F23N; F23N5/00; F23N5/02; F23N5/12; G; G01; G01N; G01N30/00; G01N30/02; G01N30/62; G01N30/64; G01N30/68; H; H01; H01J; H01J41/00; H01J41/02; H01J41/06
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) | 1972-07-14 | 1973-01-13 | 1973-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-14 | 1977-01-13 | 1977-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-14 | 1981-01-13 | 1981-07-15 | $7700.00 | Window Closed / Lapsed |