US3406991A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flange and backup ring for a conduit joint
Assignee: Midland Ross Corp
•
Filing: 1967-04-24
•
Granted: 1968-10-22
•
Expires: 1987-04-24
Abstract
No abstract record available.
Inventors
- 👤 Jr Maurice S Decker
- 👤 Hartwell R Hillier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:53
CPC Classifications
F; F16; F16L; F16L23/00; F16L23/04; Y; Y10; Y10T; Y10T403/00; Y10T403/36; Y10T403/364
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US269597A
Cited
US675335A
Cited
US986506A
Cited
GB165925A
Cited
US2613958A
Cited
US2955847A
Cited
CH359575A
Cited
US3144264A
Cited
US3301577A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-22 | 1972-04-22 | 1972-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-22 | 1976-04-22 | 1976-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-22 | 1980-04-22 | 1980-10-22 | $7700.00 | Window Closed / Lapsed |