Patent US3628860A successfully refreshed from Google Patents.
Patent US1918968A successfully refreshed from Google Patents.
US1918968A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rolling mill
Assignee: Individual
•
Filing: 1928-01-12
•
Granted: 1933-07-18
•
Expires: 1948-01-12
Abstract
No abstract record available.
Inventors
- 👤 Robert M Keeney
- 👤 John F Ferm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:29
CPC Classifications
C; C21; C21D; C21D9/00; C21D9/52; C21D9/54; C21D9/68; B; B21; B21B; B21B1/00; B21B1/22; B21B1/30; B21B1/32; B21B1/34; B21B39/00; B21B39/006
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) | 1936-07-17 | 1937-01-16 | 1937-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-07-17 | 1941-01-16 | 1941-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-07-17 | 1945-01-16 | 1945-07-18 | $7700.00 | Window Closed / Lapsed |