US2999509A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for automatically valving liquid
Assignee: Hankison Corp
•
Filing: 1956-12-12
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Granted: 1961-09-12
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Expires: 1976-12-12
Abstract
No abstract record available.
Inventors
- 👤 Paul M Hankison
- 👤 Walker William Foster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:18
CPC Classifications
F; F22; F22B; F22B37/00; F22B37/02; F22B37/42; E; E03; E03D; E03D1/00; E03D1/02; E03D1/16; F16; F16K; F16K31/00; F16K31/12; F16K31/18; F16K31/20; F16K31/22; F16K31/24; F22D; F22D11/00; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3003; Y10T137/3021; Y10T137/304; Y10T137/3052; Y10T137/3068; Y10T137/3077; Y10T137/7287; Y10T137/7358; Y10T137/7368; Y10T137/7371; Y10T137/7378; Y10T137/7381
Claims Analysis
Total Claims: 0
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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) | 1964-09-11 | 1965-03-13 | 1965-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-11 | 1969-03-13 | 1969-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-11 | 1973-03-13 | 1973-09-12 | $7700.00 | Window Closed / Lapsed |