US2234080A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cement comprising magnesia and copper chloride and articles made therefrom
Assignee: PALOS VERDES LAB CORP
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Filing: 1938-03-16
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Granted: 1941-03-04
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Expires: 1958-03-16
Abstract
No abstract record available.
Inventors
- 👤 Thomas A Mitchell
- 👤 Donald C Mitchell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:18
CPC Classifications
C; C04; C04B; C04B9/00; C04B9/02; C04B28/00; C04B28/30; C04B2111/00; C04B2111/00474; C04B2111/00482
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) | 1944-03-03 | 1944-09-02 | 1945-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-03-03 | 1948-09-02 | 1949-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-03-03 | 1952-09-02 | 1953-03-04 | $7700.00 | Window Closed / Lapsed |