US3075292A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tubing calipering instrument
Assignee: Ford Alexander Corp
•
Filing: 1958-10-03
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Granted: 1963-01-29
•
Expires: 1978-10-03
Abstract
No abstract record available.
Inventors
- 👤 Theodore L Berry
- 👤 William R Gieske
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:51
CPC Classifications
E; E21; E21B; E21B47/00; E21B47/08; G; G01; G01M; G01M3/00; G01M3/005
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
109 words
IN COMBINATION, A SINGLE CONDUCTOR CABLE ADAPTED TO BE LOWERED INTO A TUBING OR THE LIKE, A FIRST MEANS FOR MEASURING THE MAXIMUM DEPTH OF A DEPRESSION IN THE WALL OF THE TUBING ON A TRANSVERSE INTERNAL CIRCUMFERENCE THEREOF, A SECOND MEANS CARRIED BY THE CONDUCTOR CABLE FOR MEASURING THE AVERAGE DEPTH IN THE WALL OF THE TUBING ON A TRANSVERSE CIRCUMFERENCE THEREOF, MEANS FOR ENERGIZING THE SINGLE CONDUCTOR CABLE WITH DISTINGUISHABLE ELECTRIC CURRENTS, MEANS BY WHICH THE FIRST MEANS MODIFIES ONE OF SAID CURRENTS IN ACCORDANCE WITH MEASUREMENTS MADE BY THE FIRST MEANS, MEANS BY WHICH THE SECOND MEANS MODIFIES THE OTHER OF SAID CURRENTS IN ACCORDANCE WITH
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-28 | 1966-07-30 | 1967-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-28 | 1970-07-30 | 1971-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-28 | 1974-07-30 | 1975-01-29 | $7700.00 | Window Closed / Lapsed |