US2414776A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for making pipe from thermoplastic resin
Assignee: Dow Chemical Co
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Filing: 1944-10-07
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Granted: 1947-01-21
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Expires: 1964-10-07
Abstract
No abstract record available.
Inventors
- 👤 Wilbur T Stephenson
- 👤 James A Palmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:22
CPC Classifications
B; B29; B29D; B29D23/00; B29D23/001; B29C; B29C43/00; B29C43/22; B29C43/224; B29C48/00; B29C48/001; B29C67/00; B29C67/0003; B29C48/0018; B29C48/0019; B29C48/0022; B29C48/03; B29C48/09; B29C48/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-01-20 | 1950-07-22 | 1951-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-01-20 | 1954-07-22 | 1955-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-01-20 | 1958-07-22 | 1959-01-21 | $7700.00 | Window Closed / Lapsed |