US2439015A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metalworking machine
Assignee: Individual
•
Filing: 1945-05-15
•
Granted: 1948-04-06
•
Expires: 1965-05-15
Abstract
No abstract record available.
Inventors
- 👤 James B Mcclelland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:31
CPC Classifications
B; B21; B21D; B21D11/00; B21D11/20; B21D11/203; B21D5/00; B21D5/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US369638A
Cited
US511900A
Cited
US538656A
Cited
US784725A
Cited
US950730A
Cited
US1927583A
Cited
US2009737A
Cited
US2085686A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-04-06 | 1951-10-06 | 1952-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-04-06 | 1955-10-06 | 1956-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-04-06 | 1959-10-06 | 1960-04-06 | $7700.00 | Window Closed / Lapsed |