US2671692A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nozzle construction
Assignee: Basic Refractories Inc
•
Filing: 1950-09-30
•
Granted: 1954-03-09
•
Expires: 1970-09-30
Abstract
No abstract record available.
Inventors
- 👤 Chester A Matirko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:55
CPC Classifications
B; B28; B28C; B28C5/00; B28C5/02; B28C5/026; E; E04; E04F; E04F21/00; E04F21/02; E04F21/06; E04F21/08; E04F21/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1876610A
Cited
US1936997A
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US2136668A
Cited
US2269057A
Cited
US2397165A
Cited
US2436335A
Cited
US2433463A
Cited
US2543517A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-08 | 1957-09-07 | 1958-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-08 | 1961-09-07 | 1962-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-08 | 1965-09-07 | 1966-03-09 | $7700.00 | Window Closed / Lapsed |