Patent US302461A successfully refreshed from Google Patents.
US3015481A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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 21:54
CPC Classifications
C; C21; C21B; C21B7/00; C21B7/16
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US205744A
Cited
US318604A
Cited
US370251A
Cited
US426702A
Cited
US2492269A
Cited
US655528A
Cited
GB191407206A
Cited
GB316244A
Cited
GB353859A
Cited
US1848079A
Cited
GB400793A
Cited
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 |