Patent US2937403A successfully refreshed from Google Patents.
US2937403A
Expired / Lapsed
US
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Method and apparatus for the production of hollow articles from sheet synthetic resinous materials
Assignee: Individual
•
Filing: 1958-01-17
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Granted: 1960-05-24
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Expires: 1978-01-17
Abstract
No abstract record available.
Inventors
- 👤 Donald George Keith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:08
CPC Classifications
B; B29; B29C; B29C51/00; B29C51/08; B29C51/082; G; G01; G01N; G01N27/00; G01N27/62; G01N27/64; G01N27/66; G08; G08B; G08B17/00; G08B17/10; G08B17/11; G08B17/113; H; H01; H01J; H01J41/00; H01J41/02; H01J41/04; H01J41/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-24 | 1963-11-23 | 1964-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-24 | 1967-11-23 | 1968-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-24 | 1971-11-23 | 1972-05-24 | $7700.00 | Window Closed / Lapsed |