Patent US3523474A successfully refreshed from Google Patents.
US3523474A
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Precision trimming of thermoformed parts
Assignee: Phillips Petroleum Co
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Filing: 1968-04-15
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Granted: 1970-08-11
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Expires: 1988-04-15
Abstract
No abstract record available.
Inventors
- 👤 William G Kinslow Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:36
CPC Classifications
B; B29; B29C; B29C51/00; B29C51/26; B29C51/44; B29C51/445; Y; Y10; Y10S; Y10S83/00; Y10S83/914; Y10T; Y10T83/00; Y10T83/04; Y10T83/0524; Y10T83/0529; Y10T83/0577; Y10T83/202; Y10T83/2092; Y10T83/2183; Y10T83/2185; Y10T83/647; Y10T83/6472
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-10 | 1974-02-09 | 1974-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-10 | 1978-02-09 | 1978-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-10 | 1982-02-09 | 1982-08-11 | $7700.00 | Window Closed / Lapsed |