US2347320A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Casting composition
Assignee: Rohm and Haas Co
•
Filing: 1940-06-27
•
Granted: 1944-04-25
•
Expires: 1960-06-27
Abstract
No abstract record available.
Inventors
- 👤 James R Hiltner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:00
CPC Classifications
C; C08; C08F; C08F265/00; C08F265/04; C08F265/06
Claims Analysis
Total Claims: 0
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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) | 1947-04-25 | 1947-10-25 | 1948-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-04-25 | 1951-10-25 | 1952-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-04-25 | 1955-10-25 | 1956-04-25 | $7700.00 | Window Closed / Lapsed |