US3437357A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seal for thin tubing
Assignee: Engelhard Industries Inc
•
Filing: 1967-02-01
•
Granted: 1969-04-08
•
Expires: 1987-02-01
Abstract
No abstract record available.
Inventors
- 👤 Leonard R Rubin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:58
CPC Classifications
F; F16; F16L; F16L19/00; F16L19/06; F16L19/065; F16L19/08; C; C01; C01B; C01B3/00; C01B3/50; C01B3/501; C01B3/503; C01B3/505; F16L19/061; F16L41/00; F16L41/02; F16L41/08
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2761704A
Cited
US2961062A
Cited
US3103373A
Cited
US3215457A
Cited
US3251173A
Cited
US3274754A
Cited
US3375025A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-07 | 1972-10-07 | 1973-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-07 | 1976-10-07 | 1977-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-07 | 1980-10-07 | 1981-04-08 | $7700.00 | Window Closed / Lapsed |