US2654588A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat-treatment of materials
Assignee: Individual
•
Filing: 1950-04-26
•
Granted: 1953-10-06
•
Expires: 1970-04-26
Abstract
No abstract record available.
Inventors
- 👤 Somogyi Francis Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:30
CPC Classifications
F; F27; F27B; F27B1/00; F27B1/10; F27B1/20; B; B23; B23Q; B23Q3/00; B23Q3/02; B23Q3/06; B23Q3/061; F27B1/005; F27B1/02; B23Q2703/00; B23Q2703/02; B23Q2703/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-05 | 1957-04-06 | 1957-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-05 | 1961-04-06 | 1961-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-05 | 1965-04-06 | 1965-10-06 | $7700.00 | Window Closed / Lapsed |