US2434702A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tool
Assignee: Individual
•
Filing: 1946-05-31
•
Granted: 1948-01-20
•
Expires: 1966-05-31
Abstract
No abstract record available.
Inventors
- 👤 John F Kopczynski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:20
CPC Classifications
B; B21; B21D; B21D43/00; B21D43/26; Y; Y10; Y10T; Y10T83/00; Y10T83/202; Y10T83/2092; Y10T83/2096; Y10T83/217; Y10T83/2172; Y10T83/748; Y10T83/7593; Y10T83/7667; Y10T83/929; Y10T83/9411; Y10T83/9423; Y10T83/9425
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2254659A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-01-19 | 1951-07-21 | 1952-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-01-19 | 1955-07-21 | 1956-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-01-19 | 1959-07-21 | 1960-01-20 | $7700.00 | Window Closed / Lapsed |