US2943546A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shutterless camera for taking pictures of the wall of a well or the like
Assignee: Individual
•
Filing: 1955-12-29
•
Granted: 1960-07-05
•
Expires: 1975-12-29
Abstract
No abstract record available.
Inventors
- 👤 John L Gafford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:00
CPC Classifications
G; G01; G01V; G01V8/00; G01V8/02; E; E21; E21B; E21B47/00; E21B47/002; G03; G03B; G03B37/00; G03B37/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1124068A
Cited
US1122104A
Cited
US1959141A
Cited
US2019059A
Cited
US2203176A
Cited
US2338991A
Cited
US2401530A
Cited
US2633783A
Cited
US2737864A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-05 | 1964-01-04 | 1964-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-05 | 1968-01-04 | 1968-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-05 | 1972-01-04 | 1972-07-05 | $7700.00 | Window Closed / Lapsed |