Patent US3490895A successfully refreshed from Google Patents.
US3490895A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for cold-hardening of shaped bodies
Assignee: TRAFIK AB
•
Filing: 1967-10-27
•
Granted: 1970-01-20
•
Expires: 1987-10-27
Abstract
No abstract record available.
Inventors
- 👤 Karl Jonas V Svensson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:03
CPC Classifications
C; C04; C04B; C04B40/00; C04B40/02; C04B28/00; C04B28/02; C22; C22B; C22B1/00; C22B1/14; C22B1/24; C22B1/2406; C04B2103/00; C04B2103/10; C04B2103/12
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) | 1973-01-19 | 1973-07-21 | 1974-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-19 | 1977-07-21 | 1978-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-19 | 1981-07-21 | 1982-01-20 | $7700.00 | Window Closed / Lapsed |