US2389560A
Expired / Lapsed
US
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Apparatus for making thermoplastic joints
Assignee: Individual
•
Filing: 1943-11-02
•
Granted: 1945-11-20
•
Expires: 1963-11-02
Abstract
No abstract record available.
Inventors
- 👤 Robert N Steffens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:08
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/114; B29C66/1142; B29C37/00; B29C37/02; B29C37/04; B29C65/00; B29C65/02; B29C65/18; B29C65/20; B29C66/32; B29C66/326; B29C66/3262; B29C66/40; B29C66/41; B29C66/43; B29C66/432; B29C66/4322; B29C66/4324; B29C66/49; B29C66/70; B29C66/73; B29C66/739; B29C66/7392; B29C66/73921; B29C66/80; B29C66/83; B29C66/832; B29C66/8322; B29C66/8324; B29C66/83241; B29L; B29L2031/00; B29L2031/709
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) | 1948-11-19 | 1949-05-21 | 1949-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-11-19 | 1953-05-21 | 1953-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-11-19 | 1957-05-21 | 1957-11-20 | $7700.00 | Window Closed / Lapsed |