US3528133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotational mold structure having short abutting flanges with enlarged bead-forming sections
Assignee: Millennium Petrochemicals Inc
•
Filing: 1967-11-22
•
Granted: 1970-09-15
•
Expires: 1987-11-22
Abstract
No abstract record available.
Inventors
- 👤 Harold H Morse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:16
CPC Classifications
B; B29; B29C; B29C33/00; B29C41/00; B29C41/02; B29C41/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2760775A
Cited
US2812551A
Cited
US3173175A
Cited
US3155479A
Cited
US3291873A
Cited
US3316595A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-14 | 1974-03-16 | 1974-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-14 | 1978-03-16 | 1978-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-14 | 1982-03-16 | 1982-09-15 | $7700.00 | Window Closed / Lapsed |