US2379222A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anhydrite plasters
Assignee: LEFEBURE
•
Filing: 1943-03-02
•
Granted: 1945-06-26
•
Expires: 1963-03-02
Abstract
No abstract record available.
Inventors
- 👤 Etridge Joseph John
- 👤 Himsworth Francis Robert
- 👤 Lefebure Victor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:11
CPC Classifications
C; C04; C04B; C04B22/00; C04B22/08; C04B22/14; C04B22/142
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) | 1948-06-25 | 1948-12-25 | 1949-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-06-25 | 1952-12-25 | 1953-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-06-25 | 1956-12-25 | 1957-06-26 | $7700.00 | Window Closed / Lapsed |