Patent US812228A successfully refreshed from Google Patents.
US812228A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid-pressure metal-working machine.
Assignee: Bethlehem Steel Corp
•
Filing: 1904-08-24
•
Granted: 1906-02-13
•
Expires: 1924-08-24
Abstract
No abstract record available.
Inventors
- 👤 Casimir Von Philp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:03
CPC Classifications
B; B30; B30B; B30B9/00; B30B9/30; B30B9/306; B30B9/3064
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1909-02-12 | 1909-08-14 | 1910-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1913-02-12 | 1913-08-14 | 1914-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1917-02-12 | 1917-08-14 | 1918-02-13 | $7700.00 | Window Closed / Lapsed |