US3510367A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of heat treating ferrous alloy sheets
Assignee: SPX Technologies Inc
•
Filing: 1967-10-20
•
Granted: 1970-05-05
•
Expires: 1987-10-20
Abstract
No abstract record available.
Inventors
- 👤 James E Berger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:42
CPC Classifications
C; C21; C21D; C21D1/00; C21D1/62; C21D1/673; C21D1/18; C21D1/19; C21D1/22; C21D9/00; C21D9/46
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1973-05-04 | 1973-11-03 | 1974-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-04 | 1977-11-03 | 1978-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-04 | 1981-11-03 | 1982-05-05 | $7700.00 | Window Closed / Lapsed |