Patent US2764804A successfully refreshed from Google Patents.
US2764804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbine blanks
Assignee: ROBERTS ARNESS AND CO
•
Filing: 1950-09-05
•
Granted: 1956-10-02
•
Expires: 1970-09-05
Abstract
No abstract record available.
Inventors
- 👤 William B Arness
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:49
CPC Classifications
B; B21; B21K; B21K3/00; B21K3/04; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49316; Y10T29/49336; Y10T29/49339; Y10T428/00; Y10T428/12; Y10T428/12229; Y10T428/12271; Y10T428/12389
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) | 1959-10-02 | 1960-04-02 | 1960-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-02 | 1964-04-02 | 1964-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-02 | 1968-04-02 | 1968-10-02 | $7700.00 | Window Closed / Lapsed |