Patent US1692433A successfully refreshed from Google Patents.
US1692433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for making hollow molds
Assignee: MARBELITE Corp OF AMERICA
•
Filing: 1926-03-29
•
Granted: 1928-11-20
•
Expires: 1946-03-29
Abstract
No abstract record available.
Inventors
- 👤 Barkschat Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:31
CPC Classifications
B; B22; B22C; B22C9/00; B22C9/06; B28; B28B; B28B7/00; B28B7/34; B28B7/346
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1931-11-20 | 1932-05-21 | 1932-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-11-20 | 1936-05-21 | 1936-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-11-20 | 1940-05-21 | 1940-11-20 | $7700.00 | Window Closed / Lapsed |