US2952776A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means and method for the measurement of local low gas densities
Assignee: Ortech Corp
•
Filing: 1958-09-05
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Granted: 1960-09-13
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Expires: 1978-09-05
Abstract
No abstract record available.
Inventors
- 👤 Berthold W Schumacher
- 👤 Arnold E Gruen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:57
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/62; G01N21/63; G01N21/64; G01N21/645; G01N21/6456; G01M; G01M9/00; G01M9/06; G01N23/00; G01N23/22; H; H01; H01J; H01J41/00; H01J41/02; H01J41/06; G01N2223/00; G01N2223/07; G01N2223/10; G01N2223/102; G01N2223/104; G01N2223/60; G01N2223/638
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1676984A
Cited
US2550107A
Cited
US2632114A
Cited
US2642537A
Cited
US2640948A
Cited
US2659012A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-13 | 1964-03-14 | 1964-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-13 | 1968-03-14 | 1968-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-13 | 1972-03-14 | 1972-09-13 | $7700.00 | Window Closed / Lapsed |