US2545900A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for collecting soil gas samples
Assignee: ExxonMobil Oil Corp
•
Filing: 1947-01-24
•
Granted: 1951-03-20
•
Expires: 1967-01-24
Abstract
No abstract record available.
Inventors
- 👤 Rodney M Squires
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:28
CPC Classifications
G; G01; G01N; G01N1/00; G01N1/02; G01N1/22; G01N1/2294; G01N1/24
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US570357A
Cited
US686784A
Cited
US1089390A
Cited
US1932582A
Cited
US2141261A
Cited
US2210546A
Cited
US2374227A
Cited
US2386832A
Cited
US2393092A
Cited
US2356845A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-19 | 1954-09-18 | 1955-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-19 | 1958-09-18 | 1959-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-19 | 1962-09-18 | 1963-03-20 | $7700.00 | Window Closed / Lapsed |