US2435702A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure welding machine
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1944-03-30
•
Granted: 1948-02-10
•
Expires: 1964-03-30
Abstract
No abstract record available.
Inventors
- 👤 Phillip W Vallee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:54
CPC Classifications
B; B23; B23K; B23K20/00; B23K20/02; Y; Y10; Y10S; Y10S228/00; Y10S228/902
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US470623A
Cited
US473884A
Cited
US610524A
Cited
US1848905A
Cited
US2018379A
Cited
US1872235A
Cited
US2054375A
Cited
US2061287A
Cited
US2231027A
Cited
US2269523A
Cited
US2231014A
Cited
GB547112A
Cited
US2376765A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-02-09 | 1951-08-11 | 1952-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-02-09 | 1955-08-11 | 1956-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-02-09 | 1959-08-11 | 1960-02-10 | $7700.00 | Window Closed / Lapsed |