US3548043A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for vacuum forming hollow articles from two sheets of thermoplastic material
Assignee: Phillips Petroleum Co
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Filing: 1967-03-13
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Granted: 1970-12-15
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Expires: 1987-03-13
Abstract
No abstract record available.
Inventors
- 👤 Edward C Held Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:45
CPC Classifications
B; B26; B26D; B26D1/00; B29; B29C; B29C49/00; B29C49/02; B29C49/06905; B29C49/0691
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) | 1973-12-14 | 1974-06-15 | 1974-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-14 | 1978-06-15 | 1978-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-14 | 1982-06-15 | 1982-12-15 | $7700.00 | Window Closed / Lapsed |