Patent US1901459A successfully refreshed from Google Patents.
US1901459A
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US
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Machine for making and assembling a valve pin and valve gasket support
Assignee: Schraders Son Inc
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Filing: 1929-06-29
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Granted: 1933-03-14
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Expires: 1949-06-29
Abstract
No abstract record available.
Inventors
- 👤 Arthur J Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:10
CPC Classifications
B; B21; B21K; B21K25/00; Y; Y10; Y10T; Y10T29/00; Y10T29/51; Y10T29/5136; Y10T29/5137; Y10T29/5142; Y10T29/5187; Y10T29/5195; Y10T29/53; Y10T29/53313; Y10T29/53383; Y10T29/53387
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) | 1936-03-13 | 1936-09-12 | 1937-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-03-13 | 1940-09-12 | 1941-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-03-13 | 1944-09-12 | 1945-03-14 | $7700.00 | Window Closed / Lapsed |