US2393058A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Making thermoplastic helicoidal structures
Assignee: PIERCE PLASTICS Inc
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Filing: 1943-08-25
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Granted: 1946-01-15
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Expires: 1963-08-25
Abstract
No abstract record available.
Inventors
- 👤 Russell F Pierce
- 👤 James E Pierce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:28
CPC Classifications
B; B42; B42B; B42B5/00; B42B5/08; B42B5/12; B42B5/123; B29; B29C; B29C53/00; B29C53/02; B29C53/12; B29L; B29L2007/00; B29L2007/007
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) | 1949-01-14 | 1949-07-16 | 1950-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-01-14 | 1953-07-16 | 1954-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-01-14 | 1957-07-16 | 1958-01-15 | $7700.00 | Window Closed / Lapsed |