Patent US3015481A successfully refreshed from Google Patents.
US3015481A
Expired / Lapsed
US
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Tuyere assembly
Assignee: Individual
•
Filing: 1959-12-11
•
Granted: 1962-01-02
•
Expires: 1979-12-11
Abstract
No abstract record available.
Inventors
- 👤 Archie H Clingensmith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:20
CPC Classifications
C; C21; C21B; C21B7/00; C21B7/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US370251A
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US2492269A
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US655528A
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GB191407206A
Cited
GB316244A
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GB353859A
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US1848079A
Cited
GB400793A
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US2178654A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-01 | 1965-07-03 | 1966-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-01 | 1969-07-03 | 1970-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-01 | 1973-07-03 | 1974-01-02 | $7700.00 | Window Closed / Lapsed |