Patent US4401522A successfully refreshed from Google Patents.
Patent US3422657A successfully refreshed from Google Patents.
US3422657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Press transfer mechanism
Assignee: National Machinery Co
•
Filing: 1966-04-22
•
Granted: 1969-01-21
•
Expires: 1986-04-22
Abstract
No abstract record available.
Inventors
- 👤 Walter J Grombka
- 👤 Gene E Allebach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:59
CPC Classifications
B; B21; B21K; B21K27/00; B21K27/02; B21K27/04; B21D; B21D43/00; B21D43/02; B21D43/04; B21D43/05; B21D43/055
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2283505A
Cited
US3025731A
Cited
US3011464A
Cited
US3079817A
Cited
US3105399A
Cited
US3138978A
Cited
US3138128A
Cited
US3180123A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-21 | 1972-07-22 | 1973-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-21 | 1976-07-22 | 1977-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-21 | 1980-07-22 | 1981-01-21 | $7700.00 | Window Closed / Lapsed |