Patent US3500950A successfully refreshed from Google Patents.
US3500950A
Expired / Lapsed
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Radiation method and apparatus for mapping the surface characteristics of an object
Assignee: Shell USA Inc
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Filing: 1969-03-12
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Granted: 1970-03-17
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Expires: 1989-03-12
Abstract
No abstract record available.
Inventors
- 👤 William L Roever
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:24
CPC Classifications
E; E21; E21B; E21B47/00; E21B47/002; E21B47/0025; G; G01; G01S; G01S7/00; G01S7/02; G01S7/04; E21B47/08; E21B47/085; G01V; G01V1/00; G01V1/40; G01V1/44; G01V1/46; G01V1/52; G01V3/00; G01V3/08; G01V3/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2408435A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-16 | 1973-09-15 | 1974-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-16 | 1977-09-15 | 1978-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-16 | 1981-09-15 | 1982-03-17 | $7700.00 | Window Closed / Lapsed |