Patent US1915292A successfully refreshed from Google Patents.
US2952873A
Expired / Lapsed
US
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Apparatus for extrusion of plastic pipe
Assignee: Honeywell International Inc
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Filing: 1958-04-21
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Granted: 1960-09-20
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Expires: 1978-04-21
Abstract
No abstract record available.
Inventors
- 👤 Porter Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:31
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/36; B29C48/50; B29C48/695; B29C48/03; B29C48/09; B29C48/30; B29C48/32; B29C48/335; B29C48/34; B29C48/10; B29C48/345
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB237824A
Cited
US1925545A
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US2210004A
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US2177660A
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GB624699A
Cited
US2519375A
Cited
GB687739A
Cited
US2740989A
Cited
US2821745A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-20 | 1964-03-21 | 1964-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-20 | 1968-03-21 | 1968-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-20 | 1972-03-21 | 1972-09-20 | $7700.00 | Window Closed / Lapsed |