US3516690A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Welded coupling construction with bonded liner
Assignee: GALEN W KREIG
•
Filing: 1968-04-29
•
Granted: 1970-06-23
•
Expires: 1988-04-29
Abstract
No abstract record available.
Inventors
- 👤 Galen W Kreig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:32
CPC Classifications
F; F16; F16L; F16L13/00; F16L13/02; F16L13/0218; F16L13/0236; F16L13/0254; F16L13/0263
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US3291506A
Cited
US2209325A
Cited
US2893758A
Cited
US3194591A
Cited
US3266820A
Cited
US3266821A
Cited
US3325191A
Cited
US3251612A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-22 | 1973-12-22 | 1974-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-22 | 1977-12-22 | 1978-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-22 | 1981-12-22 | 1982-06-23 | $7700.00 | Window Closed / Lapsed |