US2422344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of hydraulic cement products
Assignee: Philip Carey Manufacturing Co
•
Filing: 1940-08-02
•
Granted: 1947-06-17
•
Expires: 1960-08-02
Abstract
No abstract record available.
Inventors
- 👤 Gustave L Easterberg
- 👤 Roger A Macarthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:03
CPC Classifications
B; B28; B28B; B28B1/00; B28B1/30; B28B1/40; B28B1/42; B28B1/52; B28B1/526; B28B1/527; B28B13/00; B28B13/02
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-06-16 | 1950-12-16 | 1951-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-06-16 | 1954-12-16 | 1955-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-06-16 | 1958-12-16 | 1959-06-17 | $7700.00 | Window Closed / Lapsed |