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US3436068A
Expired / Lapsed
US
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Oxygen lance
Assignee: Kennecott Corp
•
Filing: 1965-10-14
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Granted: 1969-04-01
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Expires: 1985-10-14
Abstract
No abstract record available.
Inventors
- 👤 George C Beals
- 👤 Kendal M Ogilvie
- 👤 Lyle E Mulholland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:02
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/28; C21C5/42; C21C5/46; C21C5/4606
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2055590A
Cited
US2316307A
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US2820707A
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US3045997A
Cited
US3216713A
Cited
US3240481A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-31 | 1972-09-30 | 1973-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-31 | 1976-09-30 | 1977-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-31 | 1980-09-30 | 1981-04-01 | $7700.00 | Window Closed / Lapsed |