US3109733A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molds and stools
Assignee: MOLYBDENUM CORP
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Filing: 1961-08-28
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Granted: 1963-11-05
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Expires: 1981-08-28
Abstract
No abstract record available.
Inventors
- 👤 Norman F Tisdale
- 👤 Rowland A Tisdale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:37
CPC Classifications
B; B22; B22D; B22D7/00; B22D7/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
23 words
MOLDS AND STOOLS FOR MAKING STEEL INGOTS HAVING IMPROVED RESISTANCE TO DETERIORATION CAUSED BY THERMAL SHOCK, SCALING, EROSION AND CORROSION, SAID MOLDS AND
Claim 2
Dependent Claim
23 words
MOLDS AND STOOLS FOR MAKING STEEL INGOTS HAVING IMPROVED RESISTANCE TO DETERIORATION CAUSED BY THERMAL SHOCK, SCALING, EROSION AND CORROSION, SAID MOLDS AND
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) | 1966-11-04 | 1967-05-06 | 1967-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-04 | 1971-05-06 | 1971-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-04 | 1975-05-06 | 1975-11-05 | $7700.00 | Window Closed / Lapsed |