US2817545A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve stem seal
Assignee: SS White Dental Manufacturing Co
•
Filing: 1949-12-30
•
Granted: 1957-12-24
•
Expires: 1969-12-30
Abstract
No abstract record available.
Inventors
- 👤 Wilmer P Uhler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:54
CPC Classifications
F; F16; F16K; F16K41/00; F16K41/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US745482A
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US1012067A
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US1548018A
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US1522075A
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US1631586A
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US1609340A
Cited
US2062422A
Cited
US2252554A
Cited
US2236370A
Cited
US2520092A
Cited
US2485092A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-23 | 1961-06-24 | 1961-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-23 | 1965-06-24 | 1965-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-23 | 1969-06-24 | 1969-12-24 | $7700.00 | Window Closed / Lapsed |