Patent US1901803A successfully refreshed from Google Patents.
US1659291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for disintegrating metal
Assignee: Metals Disintegrating Co Inc
•
Filing: 1917-12-20
•
Granted: 1928-02-14
•
Expires: 1937-12-20
Abstract
No abstract record available.
Inventors
- 👤 Everett J Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:11
CPC Classifications
B; B22; B22F; B22F9/00; B22F9/02; B22F9/06; B22F9/08; B22F9/082; B22F2009/0884
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) | 1931-02-13 | 1931-08-15 | 1932-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-02-13 | 1935-08-15 | 1936-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-02-13 | 1939-08-15 | 1940-02-14 | $7700.00 | Window Closed / Lapsed |