US2993263A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of expanding pressure welded passageway panels
Assignee: Reynolds Metals Co
•
Filing: 1958-01-20
•
Granted: 1961-07-25
•
Expires: 1978-01-20
Abstract
No abstract record available.
Inventors
- 👤 Paul R Staples
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:31
CPC Classifications
B; B21; B21D; B21D53/00; B21D53/02; B21D53/04; B21D53/045; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49366; Y10T29/49369; Y10T29/49371; Y10T29/49805
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1561312A
Cited
US2212481A
Cited
US2284773A
Cited
US2498275A
Cited
US2690002A
Cited
US2662273A
Cited
US2857659A
Cited
US2857660A
Cited
US2866429A
Cited
US2835961A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-24 | 1965-01-23 | 1965-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-24 | 1969-01-23 | 1969-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-24 | 1973-01-23 | 1973-07-25 | $7700.00 | Window Closed / Lapsed |