US1570538A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making artificial stone
Assignee: Individual
•
Filing: 1925-03-24
•
Granted: 1926-01-19
•
Expires: 1945-03-24
Abstract
No abstract record available.
Inventors
- 👤 Thomas James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:32
CPC Classifications
B; B28; B28B; B28B19/00; B28B1/00; B28B1/005; B28B1/14; B28B1/16; B28B7/00; B28B7/0064; B28B7/007
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) | 1929-01-18 | 1929-07-20 | 1930-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1933-01-18 | 1933-07-20 | 1934-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1937-01-18 | 1937-07-20 | 1938-01-19 | $7700.00 | Window Closed / Lapsed |