US3511685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making sealing rings
Assignee: Minnesota Rubber and Plastics
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Filing: 1968-01-30
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Granted: 1970-05-12
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Expires: 1988-01-30
Abstract
No abstract record available.
Inventors
- 👤 John H Rentschler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:00
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/02; F16J15/06; F16J15/10; F16J15/104; B; B32; B32B; B32B27/00; F16J15/021; F16J15/022; F16J15/024; F16J15/16; F16J15/32; F16J15/328; Y; Y10; Y10S; Y10S277/00; Y10S277/91; Y10S277/922; Y10T; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/264
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) | 1973-05-11 | 1973-11-10 | 1974-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-11 | 1977-11-10 | 1978-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-11 | 1981-11-10 | 1982-05-12 | $7700.00 | Window Closed / Lapsed |