Patent US2465580A successfully refreshed from Google Patents.
US2465580A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid-pressure-responsive control circuit for die-casting presses
Assignee: HPM Development Corp
•
Filing: 1944-09-28
•
Granted: 1949-03-29
•
Expires: 1964-09-28
Abstract
No abstract record available.
Inventors
- 👤 Ernst Walter
- 👤 Philip J Lindner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:57
CPC Classifications
B; B22; B22D; B22D17/00; B22D17/20; B22D17/32; Y; Y10; Y10S; Y10S425/00; Y10S425/001
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1879262A
Cited
US1791757A
Cited
US1943061A
Cited
US1870500A
Cited
DE556425C
Cited
US1965261A
Cited
US2016654A
Cited
US2088134A
Cited
US2094080A
Cited
US2120957A
Cited
US2276358A
Cited
US2292331A
Cited
US2316926A
Cited
US2393383A
Cited
US2316944A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-03-28 | 1952-09-27 | 1953-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-28 | 1956-09-27 | 1957-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-28 | 1960-09-27 | 1961-03-29 | $7700.00 | Window Closed / Lapsed |