US2834392A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Punch-press apparatus for forming strip metal
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1953-04-10
•
Granted: 1958-05-13
•
Expires: 1973-04-10
Abstract
No abstract record available.
Inventors
- 👤 Samuel H Norton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:25
CPC Classifications
B; B21; B21D; B21D53/00; B23; B23P; B23P15/00; B23P15/06; B23P15/065; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/49274; Y10T29/49279
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1424831A
Cited
US1925034A
Cited
US1915531A
Cited
US2043919A
Cited
US2201316A
Cited
US2311728A
Cited
US2311729A
Cited
US2334243A
Cited
US2346898A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-12 | 1961-11-11 | 1962-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-12 | 1965-11-11 | 1966-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-12 | 1969-11-11 | 1970-05-13 | $7700.00 | Window Closed / Lapsed |