US2823028A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ladle and trunnion ring therefor
Assignee: York Engineering and Construction Co
•
Filing: 1954-03-23
•
Granted: 1958-02-11
•
Expires: 1974-03-23
Abstract
No abstract record available.
Inventors
- 👤 Macgregor James
- 👤 Michael W Zoltun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:00
CPC Classifications
C; C21; C21B; C21B3/00; C21B3/04; C21B3/06; C21B3/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2143557A
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US2198252A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-10 | 1961-08-12 | 1962-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-10 | 1965-08-12 | 1966-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-10 | 1969-08-12 | 1970-02-11 | $7700.00 | Window Closed / Lapsed |