US2359477A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making hollow head valves
Assignee: Eaton Corp
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Filing: 1942-07-03
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Granted: 1944-10-03
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Expires: 1962-07-03
Abstract
No abstract record available.
Inventors
- 👤 Joseph H Hoern
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:07
CPC Classifications
B; B23; B23P; B23P13/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/49298; Y10T29/49307; Y10T29/49309; Y10T29/49826; Y10T29/49908; Y10T29/49925; Y10T29/49934; Y10T428/00; Y10T428/12; Y10T428/12229; Y10T428/12271; Y10T428/12292; Y10T428/13
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) | 1947-10-03 | 1948-04-03 | 1948-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-10-03 | 1952-04-03 | 1952-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-10-03 | 1956-04-03 | 1956-10-03 | $7700.00 | Window Closed / Lapsed |