US3392223A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing thermoplastic articles having thin double walls
Assignee: Individual
•
Filing: 1966-05-05
•
Granted: 1968-07-09
•
Expires: 1986-05-05
Abstract
No abstract record available.
Inventors
- 👤 Alfons W Thiel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:24
CPC Classifications
B; B29; B29C; B29C57/00; B29C57/12; B29C51/00; B29C51/006
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2090528A
Cited
US2859575A
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US3052926A
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US2953814A
Cited
US3115677A
Cited
US3207830A
Cited
US3120570A
Cited
US3247302A
Cited
US3244780A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-09 | 1972-01-08 | 1972-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-09 | 1976-01-08 | 1976-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-09 | 1980-01-08 | 1980-07-09 | $7700.00 | Window Closed / Lapsed |