US2609575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for pressure injecting casting material by diaphragm pumps
Assignee: Individual
•
Filing: 1949-05-12
•
Granted: 1952-09-09
•
Expires: 1969-05-12
Abstract
No abstract record available.
Inventors
- 👤 Louis H Morin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:39
CPC Classifications
F; F04; F04B; F04B15/00; F04B15/04; B; B22; B22D; B22D17/00; B22D17/02; B22D17/04; F04B23/00; F04B23/02; F04B23/021; F04B23/023; F04B43/00; F04B43/0009; F04B43/0027; F04B43/08; F04B9/00; F04B9/08; F04B9/12; F04B9/123; F04B9/127
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US268513A
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US1964324A
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US2195360A
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US2273896A
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US2367303A
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GB588780A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-09 | 1956-03-10 | 1956-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-09 | 1960-03-10 | 1960-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-09 | 1964-03-10 | 1964-09-09 | $7700.00 | Window Closed / Lapsed |