US2439367A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for melting plastic compositions
Assignee: JAMES GIBBONS Co
•
Filing: 1945-12-27
•
Granted: 1948-04-06
•
Expires: 1965-12-27
Abstract
No abstract record available.
Inventors
- 👤 William F Middlestadt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:07
CPC Classifications
C; C10; C10C; C10C3/00; C10C3/10; C10C3/12
Claims Analysis
Total Claims: 0
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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 |