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US1826549A
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Process of making composite valves
Assignee: RICH TOOL Co
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Filing: 1924-07-09
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Granted: 1931-10-06
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Expires: 1944-07-09
Abstract
No abstract record available.
Inventors
- 👤 Jardine Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:16
CPC Classifications
B; B21; B21K; B21K1/00; B21K1/20; B21K1/22; B23; B23K; B23K5/00; B23K5/18; B23P; B23P11/00; H; H01; H01R; H01R4/00; H01R4/28; H01R4/38; H01R4/46; H05; H05B; H05B3/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/49298; Y10T29/49307; Y10T29/49309; Y10T29/49826; Y10T29/49908; Y10T29/49915; Y10T29/49925; Y10T29/49934; Y10T29/49936
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) | 1934-10-05 | 1935-04-06 | 1935-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-10-05 | 1939-04-06 | 1939-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-10-05 | 1943-04-06 | 1943-10-06 | $7700.00 | Window Closed / Lapsed |