US3436289A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a corrugated tube of fiber-reinforced plastic material
Assignee: Imperial Metal Industries Kynoch Ltd
•
Filing: 1965-01-28
•
Granted: 1969-04-01
•
Expires: 1985-01-28
Abstract
No abstract record available.
Inventors
- 👤 John Gordon Hardwick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:22
CPC Classifications
B; B29; B29C; B29C53/00; B29C53/56; B29C53/58; B29C53/583; B29C53/585; B29C53/586; F; F16; F16L; F16L11/00; F16L11/04; F16L11/11; F16L11/115; F16L9/00; F16L9/16; B29L; B29L2023/00; B29L2023/18
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-31 | 1972-09-30 | 1973-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-31 | 1976-09-30 | 1977-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-31 | 1980-09-30 | 1981-04-01 | $7700.00 | Window Closed / Lapsed |