US2494689A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for producing twisted thermoplastic resin strips
Assignee: Plax Corp
•
Filing: 1947-02-25
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Granted: 1950-01-17
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Expires: 1967-02-25
Abstract
No abstract record available.
Inventors
- 👤 Robert W Canfield
- 👤 Robert B Woodward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:22
CPC Classifications
B; B29; B29C; B29C53/00; B29C53/14; B29C43/00; B29C43/22; B29C43/224; B29C48/00; B29C48/001; B29C48/0019; B29C48/03; B29C48/06; B29C48/13; B29C48/131; Y; Y10; Y10S; Y10S264/00; Y10S264/66
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US536804A
Cited
US1306283A
Cited
US1876444A
Cited
US1637207A
Cited
US2171095A
Cited
US2369858A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-16 | 1953-07-18 | 1954-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-16 | 1957-07-18 | 1958-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-16 | 1961-07-18 | 1962-01-17 | $7700.00 | Window Closed / Lapsed |