US2984097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas measuring apparatus
Assignee: Merck and Co Inc
•
Filing: 1956-09-11
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Granted: 1961-05-16
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Expires: 1976-09-11
Abstract
No abstract record available.
Inventors
- 👤 Kniazuk Michael
- 👤 Fred R Prediger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:41
CPC Classifications
G; G01; G01N; G01N29/00; G01N29/02; G01N29/024; G01N2291/00; G01N2291/01; G01N2291/012; G01N2291/02; G01N2291/021; G01N2291/0215; G01N2291/10; G01N2291/102
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) | 1964-05-15 | 1964-11-14 | 1965-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-15 | 1968-11-14 | 1969-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-15 | 1972-11-14 | 1973-05-16 | $7700.00 | Window Closed / Lapsed |