US2968428A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gravity actuated valves for pressurized dispensers
Assignee: Gulf Research and Development Co
•
Filing: 1959-02-26
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Granted: 1961-01-17
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Expires: 1979-02-26
Abstract
No abstract record available.
Inventors
- 👤 Arthur J Samuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:28
CPC Classifications
B; B65; B65D; B65D83/00; B65D83/14; B65D83/36; Y; Y10; Y10T; Y10T137/00; Y10T137/0753
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) | 1964-01-17 | 1964-07-18 | 1965-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-17 | 1968-07-18 | 1969-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-17 | 1972-07-18 | 1973-01-17 | $7700.00 | Window Closed / Lapsed |