US2965271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve body incorporating mounting cup mask and gasket
Assignee: Development Research Inc
•
Filing: 1956-12-27
•
Granted: 1960-12-20
•
Expires: 1976-12-27
Abstract
No abstract record available.
Inventors
- 👤 Jack W Soffer
- 👤 Donald M Kitterman
- 👤 Lee D Hart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:12
CPC Classifications
B; B65; B65D; B65D83/00; B65D83/14; B65D83/44; B65D83/46
Claims Analysis
Total Claims: 0
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US2869764A
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US2775483A
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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 |