Patent US3216037A successfully refreshed from Google Patents.
Patent US1790301A successfully refreshed from Google Patents.
US1790301A
Expired / Lapsed
US
⏱️ 0.0 years remaining
gilburg
Assignee: —
•
Filing: —
•
Granted: 1931-01-27
•
Expires: 1948-01-27
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:53
CPC Classifications
B; B21; B21D; B21D43/00; B21D43/02; B21D43/04; Y; Y10; Y10T; Y10T29/00; Y10T29/51; Y10T29/5124; Y10T83/00; Y10T83/04; Y10T83/0405
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) | 1934-01-26 | 1934-07-28 | 1935-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-01-26 | 1938-07-28 | 1939-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-01-26 | 1942-07-28 | 1943-01-27 | $7700.00 | Window Closed / Lapsed |