US2906293A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transfer valve
Assignee: Speakman Co
•
Filing: 1955-09-12
•
Granted: 1959-09-29
•
Expires: 1975-09-12
Abstract
No abstract record available.
Inventors
- 👤 Fraser James
- 👤 Edward S Mclean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:20
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/02; F16K11/08; F16K11/085; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86815; Y10T137/86823; Y10T137/86831; Y10T137/86863; Y10T137/86871; Y10T137/87249
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US488401A
Cited
US1685236A
Cited
US1064966A
Cited
US1919616A
Cited
US2621886A
Cited
US2698120A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-28 | 1963-03-30 | 1963-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-28 | 1967-03-30 | 1967-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-28 | 1971-03-30 | 1971-09-29 | $7700.00 | Window Closed / Lapsed |