Patent US3422174A successfully refreshed from Google Patents.
US3422174A
Expired / Lapsed
US
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Method and apparatus for producing hollow plastic articles
Assignee: Individual
•
Filing: 1966-02-08
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Granted: 1969-01-14
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Expires: 1986-02-08
Abstract
No abstract record available.
Inventors
- 👤 Norbert Hagen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:26
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/42; B29C49/76; B29C49/761; B29C49/48; B29C49/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2541249A
Cited
US2991500A
Cited
US3004285A
Cited
US3048891A
Cited
US3174181A
Cited
US3348267A
Cited
US3309442A
Cited
US3224916A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-14 | 1972-07-15 | 1973-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-14 | 1976-07-15 | 1977-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-14 | 1980-07-15 | 1981-01-14 | $7700.00 | Window Closed / Lapsed |