US3470291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Forming thermoplastic articles
Assignee: Shell USA Inc
•
Filing: 1966-06-30
•
Granted: 1969-09-30
•
Expires: 1986-06-30
Abstract
No abstract record available.
Inventors
- 👤 Herbert G Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:01
CPC Classifications
B; B29; B29C; B29C51/00; B29C51/08; B29C51/082; B29C51/085; B29C51/002; B29C51/14; B29C67/00; B29C67/0029; B30; B30B; B30B5/00; B30B5/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2351475A
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US2385083A
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US2362672A
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US2390803A
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DE944458C
Cited
GB739436A
Cited
US2890541A
Cited
US3319295A
Cited
US3184524A
Cited
US3384695A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-29 | 1973-03-31 | 1973-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-29 | 1977-03-31 | 1977-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-29 | 1981-03-31 | 1981-09-30 | $7700.00 | Window Closed / Lapsed |