US2737864A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Borehole camera
Assignee: Individual
•
Filing: 1951-11-09
•
Granted: 1956-03-13
•
Expires: 1971-11-09
Abstract
No abstract record available.
Inventors
- 👤 Robert P Gutterman
- 👤 Charles G Small
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:27
CPC Classifications
G; G03; G03B; G03B37/00; G03B37/005; E; E21; E21B; E21B47/00; E21B47/002; G03B17/00; G03B17/24; G03B17/245; G03B2217/00; G03B2217/24; G03B2217/242; G03B2217/243
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE287488C
Cited
GB191319215A
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US1658537A
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DE586132C
Cited
US2341745A
Cited
US2338028A
Cited
GB616842A
Cited
US2632801A
Cited
US2633783A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-13 | 1959-09-12 | 1960-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-13 | 1963-09-12 | 1964-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-13 | 1967-09-12 | 1968-03-13 | $7700.00 | Window Closed / Lapsed |