US3021571A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coupling for plastic tubes
Assignee: IMP Eastman Corp
•
Filing: 1958-03-17
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Granted: 1962-02-20
•
Expires: 1978-03-17
Abstract
No abstract record available.
Inventors
- 👤 Jackson Harold Ernest
- 👤 Moss Trevor Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:21
CPC Classifications
B; B29; B29C; B29C57/00; B29C57/02; B29C57/08; B29C49/00; B29C49/42; B29C49/58; F; F16; F16L; F16L47/00; B29C2949/00; B29C2949/07; B29C2949/079; B29C2949/08; B29K; B29K2105/00; B29K2105/25; B29K2105/253; B29K2105/258; B29L; B29L2023/00; B29L2023/18; Y; Y10; Y10S; Y10S264/00; Y10S264/50; Y10S264/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2779279A
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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) | 1965-02-19 | 1965-08-21 | 1966-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-19 | 1969-08-21 | 1970-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-19 | 1973-08-21 | 1974-02-20 | $7700.00 | Window Closed / Lapsed |