US3012427A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure-sealing device
Assignee: Wyeth Holdings LLC
•
Filing: 1961-04-04
•
Granted: 1961-12-12
•
Expires: 1981-04-04
Abstract
No abstract record available.
Inventors
- 👤 William R Osban
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:39
CPC Classifications
D; D06; D06B; D06B23/00; D06B23/14; D06B23/18; D01; D01D; D01D10/00; D01D10/04; D01D10/0436; D01D10/0481
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US814124A
Cited
US2367174A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-11 | 1965-06-12 | 1965-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-11 | 1969-06-12 | 1969-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-11 | 1973-06-12 | 1973-12-12 | $7700.00 | Window Closed / Lapsed |