US3430685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cold chamber-pressure casting machine with sieve like barrier for piston pump
Assignee: Buehler AG
•
Filing: 1965-09-21
•
Granted: 1969-03-04
•
Expires: 1985-09-21
Abstract
No abstract record available.
Inventors
- 👤 Hellmut Drugowitsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:09
CPC Classifications
B; B22; B22D; B22D17/00; B22D17/20; B22D17/30; B22D39/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2206211A
Cited
DE687011C
Cited
DE699787C
Cited
DE745583C
Cited
US2557551A
Cited
US2830340A
Cited
US3292218A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-03 | 1972-09-02 | 1973-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-03 | 1976-09-02 | 1977-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-03 | 1980-09-02 | 1981-03-04 | $7700.00 | Window Closed / Lapsed |