US2513052A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for making hollow plastic articles
Assignee: Individual
•
Filing: 1945-12-11
•
Granted: 1950-06-27
•
Expires: 1965-12-11
Abstract
No abstract record available.
Inventors
- 👤 Roberts Robert Eldon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:26
CPC Classifications
B; B29; B29D; B29D22/00; B29D22/02; B29D22/04; B29C; B29C65/00; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US637372A
Cited
US1270873A
Cited
US1497592A
Cited
US1467438A
Cited
US1639430A
Cited
US2229613A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-06-26 | 1953-12-26 | 1954-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-26 | 1957-12-26 | 1958-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-26 | 1961-12-26 | 1962-06-27 | $7700.00 | Window Closed / Lapsed |