US3148272A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Applicator for heat treating refractory linings of ladles
Assignee: Aitken Products Inc
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Filing: 1962-10-23
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Granted: 1964-09-08
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Expires: 1982-10-23
Abstract
No abstract record available.
Inventors
- 👤 David A Aitken
- 👤 Jr David A Aitken
- 👤 Calvin M Aitken
- 👤 William S Watkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:44
CPC Classifications
B; B22; B22D; B22D41/00; B22D41/005; B22D41/01; B22D41/015; F; F27; F27B; F27B3/00; F27B3/10; F27B3/12
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
85 words
APPARATUS AS DEFINED IN CLAIM 1 WHEREIN SAID ENERGY SUPPLYING MEANS INCLUDES A HARNESS CONDUCTOR WITHIN SAID CHAMBER, AND A TERMINAL CONNECTOR ELECTRICALLY CONNECTING SAID HARNESS CONDUCTOR WITH THE END PORTION OF ONE OF SAID HEATING ELEMENTS, SAID TERMINAL CONNECTOR AND SAID HARNESS CONDUCTOR HAVING SMALLER CROSS-SECTIONAL DIMENSIONS THAN THE CORRESPONDING DIMENSIONS OF SAID OPENING AND SAID HARNESS CONDUCTOR BEING PROVIDED WITH SUFFICIENT SLACK TO PERMIT WITHDRAWAL OF SAID TERMINAL CONNECTOR AND THE ADJACENT END OF SAID HARNESS CONDUCTOR FROM SAID CHAMBER THROUGH SAID OPENING.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-08 | 1968-03-09 | 1968-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-08 | 1972-03-09 | 1972-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-08 | 1976-03-09 | 1976-09-08 | $7700.00 | Window Closed / Lapsed |