Patent US2964969A successfully refreshed from Google Patents.
US2964969A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stem assembly for valves
Assignee: ACF Industries Inc
•
Filing: 1960-01-11
•
Granted: 1960-12-20
•
Expires: 1980-01-11
Abstract
No abstract record available.
Inventors
- 👤 Jr Louis F Eckert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:59
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/44; F16K31/60; F16K37/00; F16K37/0008; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18568; Y10T74/18576; Y10T74/18712; Y10T74/1872; Y10T74/20; Y10T74/20396; Y10T74/20474; Y10T74/20492; Y10T74/20504; Y10T74/21; Y10T74/2186; Y10T74/219
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-20 | 1964-06-20 | 1964-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-20 | 1968-06-20 | 1968-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-20 | 1972-06-20 | 1972-12-20 | $7700.00 | Window Closed / Lapsed |