US2501329A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermo-injecting molding process
Assignee: Baldwin Locomotive Works
•
Filing: 1946-05-23
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Granted: 1950-03-21
•
Expires: 1966-05-23
Abstract
No abstract record available.
Inventors
- 👤 Keith W Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:24
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/17; B29C45/72; B29C33/00; B29C45/03
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1997074A
Cited
US2156396A
Cited
US2344176A
Cited
US2319439A
Cited
GB551468A
Cited
US2359840A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-20 | 1953-09-19 | 1954-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-20 | 1957-09-19 | 1958-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-20 | 1961-09-19 | 1962-03-21 | $7700.00 | Window Closed / Lapsed |