Patent US2062395A successfully refreshed from Google Patents.
US2912837A
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US
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Gas valve stem construction
Assignee: Harper Wyman Co
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Filing: 1958-01-20
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Granted: 1959-11-17
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Expires: 1978-01-20
Abstract
No abstract record available.
Inventors
- 👤 Almer H Brodbeck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:59
CPC Classifications
F; F16; F16D; F16D3/00; F16D3/16; F16D3/20; F16D3/202; F16D3/205; F16D3/2052; F16K; F16K1/00; F16K1/32; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32606
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US771457A
Cited
US1022909A
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US1685446A
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US2219591A
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US2381102A
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US2509426A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-16 | 1963-05-18 | 1963-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-16 | 1967-05-18 | 1967-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-16 | 1971-05-18 | 1971-11-17 | $7700.00 | Window Closed / Lapsed |