US3059831A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Connection between two sealed chambers and method of making the same
Assignee: University of Notre Dame
•
Filing: 1958-11-28
•
Granted: 1962-10-23
•
Expires: 1978-11-28
Abstract
No abstract record available.
Inventors
- 👤 Philip C Trexler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:51
CPC Classifications
B; B25; B25J; B25J21/00; B25J21/02; Y; Y10; Y10S; Y10S55/00; Y10S55/18; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052
Claims Analysis
Total Claims: 0
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US2908601A
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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) | 1965-10-22 | 1966-04-23 | 1966-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-22 | 1970-04-23 | 1970-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-22 | 1974-04-23 | 1974-10-23 | $7700.00 | Window Closed / Lapsed |