Patent US2680883A successfully refreshed from Google Patents.
US2680883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Injection molding machine
Assignee: HPM Development Corp
•
Filing: 1950-08-04
•
Granted: 1954-06-15
•
Expires: 1970-08-04
Abstract
No abstract record available.
Inventors
- 👤 Bernard D Ashbaugh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:52
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/17; B29C45/70
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USRE21906E
Cited
DE641142C
Cited
US2279344A
Cited
US2203620A
Cited
US2344176A
Cited
US2373939A
Cited
US2443554A
Cited
US2476550A
Cited
US2493805A
Cited
US2501595A
Cited
US2482243A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-06-14 | 1957-12-14 | 1958-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-06-14 | 1961-12-14 | 1962-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-06-14 | 1965-12-14 | 1966-06-15 | $7700.00 | Window Closed / Lapsed |