US3204939A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat treating apparatus
Assignee: Individual
•
Filing: 1963-12-02
•
Granted: 1965-09-07
•
Expires: 1983-12-02
Abstract
No abstract record available.
Inventors
- 👤 The Illinois National Bank Co
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:13
CPC Classifications
F; F27; F27D; F27D1/00; F27D1/02; F27D1/021
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
103 words
IN A HEAT TREATING APPARATUS, THE COMBINATION OF, A WALL, A REFRACTORY LINING INSIDE SAID WALL INCLUDING A BLOCK OF REFRACTORY MATERIAL DISPOSED ADJACENT SAID WALL, A CERAMIC PIN HAVING ONE END SECURED TO SAID BLOCK AND A NECK EXTENDING AWAY FROM SAID BLOCK TOWARD SAID WALL, A SPRING CLIP MOUNTED ON SAID WALL AND HAVING TWO ELONGATED SPRING LEGS EXTENDING ALONG THE WALL IN CLOSELY SPACED SIDE-BY-SIDE RELATION AND STADDLING SAID NECK, AND AN ENLARGEMENT ON THE FREE END OF SAID NECK ABUTTING AGAINST SAID LEGS WHEREBY SAID CLIP SUSPENDS SAID BLOCK FROM SAID WALL, SAID LEGS BEING POSITIONED TO PARALLEL THE
References Cited (Backward Citations)
DE473933C
Cited
US1806022A
Cited
US2021610A
Cited
US2202568A
Cited
US2225983A
Cited
US2195905A
Cited
US2429949A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |