US2633480A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pencil galvanometer
Assignee: ExxonMobil Oil Corp
•
Filing: 1949-06-20
•
Granted: 1953-03-31
•
Expires: 1969-06-20
Abstract
No abstract record available.
Inventors
- 👤 William S Staff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:20
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/24; G01V1/242
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1193979A
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US1951578A
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US1982333A
Cited
US2282590A
Cited
US2291713A
Cited
US2439576A
Cited
US2149442A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-30 | 1956-09-29 | 1957-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-30 | 1960-09-29 | 1961-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-30 | 1964-09-29 | 1965-03-31 | $7700.00 | Window Closed / Lapsed |