Patent US2528238A successfully refreshed from Google Patents.
Patent US2654242A successfully refreshed from Google Patents.
US2654242A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Measurement of water vapor in gases
Assignee: Shell Development Co
•
Filing: 1950-07-07
•
Granted: 1953-10-06
•
Expires: 1970-07-07
Abstract
No abstract record available.
Inventors
- 👤 Marvin B Fallgatter
- 👤 Kauko E Hallikainen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:36
CPC Classifications
G; G01; G01N; G01N25/00; G01N25/56; G01N25/58
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1794222A
Cited
US1945660A
Cited
US1969626A
Cited
US2299529A
Cited
US2566307A
Cited
US2484202A
Cited
US2593313A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-05 | 1957-04-06 | 1957-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-05 | 1961-04-06 | 1961-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-05 | 1965-04-06 | 1965-10-06 | $7700.00 | Window Closed / Lapsed |