US3390490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for processing surfaces
Assignee: WALTHER TECHNIK CARL KURT WALT
•
Filing: 1965-09-16
•
Granted: 1968-07-02
•
Expires: 1985-09-16
Abstract
No abstract record available.
Inventors
- 👤 Hesslenberg Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:12
CPC Classifications
B; B24; B24B; B24B31/00; B24B31/06; B05; B05C; B05C3/00; B05C3/02; B05C3/04; B05C3/08; B24B31/02
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) | 1971-07-02 | 1972-01-01 | 1972-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-02 | 1976-01-01 | 1976-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-02 | 1980-01-01 | 1980-07-02 | $7700.00 | Window Closed / Lapsed |