US2448947A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Injection molding apparatus
Assignee: AT&T Inc
•
Filing: 1945-04-04
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Granted: 1948-09-07
•
Expires: 1965-04-04
Abstract
No abstract record available.
Inventors
- 👤 Harry J Arthur
- 👤 Harrell S Mccrory
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:41
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/17; B29C45/18; B29C45/1808; B29C31/00; B29C31/04; B29C31/06; B29C31/065; B29C31/066; B29K; B29K2105/00; B29K2105/25; B29K2105/251
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2080783A
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US2150097A
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US2133027A
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US2262615A
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US2290129A
Cited
US2351454A
Cited
US2361432A
Cited
US2353276A
Cited
US2358956A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-09-07 | 1952-03-08 | 1952-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-09-07 | 1956-03-08 | 1956-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-09-07 | 1960-03-08 | 1960-09-07 | $7700.00 | Window Closed / Lapsed |