US2598835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slip rod gauge
Assignee: Phillips Petroleum Co
•
Filing: 1948-12-28
•
Granted: 1952-06-03
•
Expires: 1968-12-28
Abstract
No abstract record available.
Inventors
- 👤 Martin A Ryan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:58
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/30; G01F23/64; G01F23/68; G01F23/70; G01F23/66
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1502125A
Cited
US2032370A
Cited
US2233572A
Cited
US2357745A
Cited
US2339922A
Cited
US2484690A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-06-03 | 1955-12-03 | 1956-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-03 | 1959-12-03 | 1960-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-03 | 1963-12-03 | 1964-06-03 | $7700.00 | Window Closed / Lapsed |