US3040245A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas detectors
Assignee: Individual
•
Filing: 1958-06-02
•
Granted: 1962-06-19
•
Expires: 1978-06-02
Abstract
No abstract record available.
Inventors
- 👤 Robert T Brizzolara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:12
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/416; G01N27/4162
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2102282A
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US2156693A
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US2270768A
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US2377363A
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US2461334A
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US2525754A
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US2697191A
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US2795756A
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US2851655A
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US2943028A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-06-18 | 1965-12-18 | 1966-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-18 | 1969-12-18 | 1970-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-18 | 1973-12-18 | 1974-06-19 | $7700.00 | Window Closed / Lapsed |