US2426779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Relay valve apparatus
Assignee: MW Kellogg Co
•
Filing: 1943-06-14
•
Granted: 1947-09-02
•
Expires: 1963-06-14
Abstract
No abstract record available.
Inventors
- 👤 Macdonald Maurice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:02
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/44; F16K31/52; F16K31/524; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86389; Y10T137/86405; Y10T137/86421; Y10T137/86429; Y10T137/877; Y10T137/87708; Y10T137/87732; Y10T137/87772; Y10T74/00; Y10T74/21; Y10T74/2101; Y10T74/2102
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US258433A
Cited
US665540A
Cited
US1460363A
Cited
GB264396A
Cited
GB288097A
Cited
US1846690A
Cited
US1885565A
Cited
US2163864A
Cited
US2339728A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-09-01 | 1951-03-03 | 1951-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-09-01 | 1955-03-03 | 1955-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-09-01 | 1959-03-03 | 1959-09-02 | $7700.00 | Window Closed / Lapsed |