US2973008A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve
Assignee: Wallace O Leonard Inc
•
Filing: 1958-01-09
•
Granted: 1961-02-28
•
Expires: 1978-01-09
Abstract
No abstract record available.
Inventors
- 👤 Alfred J Klose
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:01
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/32; F16K1/34; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7866; Y10T137/7867; Y10T137/7868; Y10T137/7904; Y10T137/7922; Y10T137/7929; Y10T137/7932; Y10T137/7933
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1530924A
Cited
US2214346A
Cited
US2346938A
Cited
US2594641A
Cited
US2857131A
Cited
US2812772A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-02-28 | 1964-08-29 | 1965-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-28 | 1968-08-29 | 1969-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-28 | 1972-08-29 | 1973-02-28 | $7700.00 | Window Closed / Lapsed |