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Patent US3412183A successfully refreshed from Google Patents.
US3412183A
Expired / Lapsed
US
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Method of and apparatus for forming hollow plastic structures
Assignee: WOODAIL IND Inc
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Filing: 1965-09-24
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Granted: 1968-11-19
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Expires: 1985-09-24
Abstract
No abstract record available.
Inventors
- 👤 David P Anderson
- 👤 Leslie J Berridge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:32
CPC Classifications
B; B29; B29C; B29C51/00; B29C51/26; B29C51/266; B29C51/267; B29C51/42; B29C51/421
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2836852A
Cited
US3242245A
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US3153813A
Cited
US3142089A
Cited
US3193881A
Cited
US3273203A
Cited
US3256565A
Cited
US3277224A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-19 | 1972-05-20 | 1972-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-19 | 1976-05-20 | 1976-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-19 | 1980-05-20 | 1980-11-19 | $7700.00 | Window Closed / Lapsed |