US2965398A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing device
Assignee: Sulzer Escher Wyss AG
•
Filing: 1957-08-01
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Granted: 1960-12-20
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Expires: 1977-08-01
Abstract
No abstract record available.
Inventors
- 👤 Keller Curt
- 👤 Winkler Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:53
CPC Classifications
G; G21; G21D; G21D1/00; G21D1/02; F; F01; F01D; F01D11/00; F01D11/02; F01D11/04; F04; F04D; F04D29/00; F04D29/08; F04D29/10; F04D29/102; F04D29/104; F16; F16J; F16J15/00; F16J15/16; F16J15/40; Y; Y02; Y02E; Y02E30/00; Y02E30/30; Y10; Y10S; Y10S277/00; Y10S277/935; Y10S277/936; Y10S277/938; Y10S376/00; Y10S376/90
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) | 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 |