US1466087A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite piston-packing ring and method of making same
Assignee: Johns Manville Inc
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Filing: 1921-01-11
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Granted: 1923-08-28
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Expires: 1941-01-11
Abstract
No abstract record available.
Inventors
- 👤 Christenson George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:28
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/32; F16J15/3284; Y; Y10; Y10S; Y10S277/00; Y10S277/924; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1036; Y10T428/00; Y10T428/21; Y10T428/215
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1926-08-27 | 1927-02-26 | 1927-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-08-27 | 1931-02-26 | 1931-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-08-27 | 1935-02-26 | 1935-08-28 | $7700.00 | Window Closed / Lapsed |