Patent US3361454A successfully refreshed from Google Patents.
US3361454A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Penstock coupling
Assignee: Smith Blair Inc
•
Filing: 1966-08-11
•
Granted: 1968-01-02
•
Expires: 1986-08-11
Abstract
No abstract record available.
Inventors
- 👤 Thomas A Graham
- 👤 Wilson W Franklin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:14
CPC Classifications
F; F16; F16L; F16L21/00; F16L21/02; F16L21/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1434952A
Cited
US1423754A
Cited
US2010769A
Cited
US2538393A
Cited
US2701731A
Cited
US3002772A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-01 | 1971-07-03 | 1972-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-01 | 1975-07-03 | 1976-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-01 | 1979-07-03 | 1980-01-02 | $7700.00 | Window Closed / Lapsed |