US3408242A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for welding layers of thermoplastic material
Assignee: Windmoeller and Hoelscher KG
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Filing: 1964-03-11
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Granted: 1968-10-29
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Expires: 1984-03-11
Abstract
No abstract record available.
Inventors
- 👤 Rochla Kurt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:55
CPC Classifications
B; B29; B29C; B29C53/00; B29C53/36; B29C65/00; B29C65/02; B29C65/14; B29C65/1429; B29C65/1432; B29C65/1445; B29C65/1464; B29C65/1467; B29C65/18; B29C65/22; B29C65/221; B29C65/222; B29C65/223; B29C65/229; B29C65/74; B29C65/745; B29C66/00; B29C66/003; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/40; B29C66/41; B29C66/43; B29C66/431; B29C66/4312; B29C66/432; B29C66/4322; B29C66/49; B29C66/70; B29C66/73; B29C66/739; B29C66/7392; B29C66/73921; B29C66/80; B29C66/81; B29C66/814; B29C66/8141; B29C66/81427; B29C66/81431; B29C66/8145; B29C66/81457; B29C66/818; B29C66/8181; B29C66/81811; B29C66/8187; B29C66/81871; B29C66/83; B29C66/832; B29C66/8322; B29C66/81411; B29C66/81415; B29C66/81421; B29C66/81422
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2570921A
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US3247041A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-29 | 1972-04-29 | 1972-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-29 | 1976-04-29 | 1976-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-29 | 1980-04-29 | 1980-10-29 | $7700.00 | Window Closed / Lapsed |