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Patent US2438153A successfully refreshed from Google Patents.
US2438153A
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US
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Piston and seal
Assignee: Wagner Electric Corp
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Filing: 1944-01-07
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Granted: 1948-03-23
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Expires: 1964-01-07
Abstract
No abstract record available.
Inventors
- 👤 Dick Burns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:00
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/32; Y; Y10; Y10S; Y10S285/00; Y10S285/918
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US938095A
Cited
US1604287A
Cited
US1713031A
Cited
US1921996A
Cited
US2180795A
Cited
US2326116A
Cited
US2314683A
Cited
US2349170A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-03-23 | 1951-09-22 | 1952-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-03-23 | 1955-09-22 | 1956-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-03-23 | 1959-09-22 | 1960-03-23 | $7700.00 | Window Closed / Lapsed |