US2639832A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Holding seal for crankcase gaskets
Assignee: Individual
•
Filing: 1949-06-11
•
Granted: 1953-05-26
•
Expires: 1969-06-11
Abstract
No abstract record available.
Inventors
- 👤 Carl N Bergstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:58
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/02; F16B; F16B37/00; F16B37/04; F16B37/041; F16B37/043; F16B41/00; F16B41/002; F16B43/00; F16B43/001; F16B2200/00; F16B2200/60; Y; Y10; Y10S; Y10S29/00; Y10S29/034; Y10S411/00; Y10S411/915; Y10S411/924; Y10S411/929; Y10S411/999; Y10T; Y10T403/00; Y10T403/16; Y10T403/1616; Y10T403/1624
Claims Analysis
Total Claims: 0
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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) | 1956-05-25 | 1956-11-24 | 1957-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-25 | 1960-11-24 | 1961-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-25 | 1964-11-24 | 1965-05-26 | $7700.00 | Window Closed / Lapsed |