Patent US2833507A successfully refreshed from Google Patents.
US2833507A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat motor valve
Assignee: Alco Valve Co
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Filing: 1953-10-22
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Granted: 1958-05-06
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Expires: 1973-10-22
Abstract
No abstract record available.
Inventors
- 👤 John E Dube
- 👤 Joseph G Wolfslau
- 👤 Lyle S Houghton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:28
CPC Classifications
F; F24; F24H; F24H9/00; F24H9/20; F16; F16K; F16K31/00; F16K31/12; G; G05; G05B; G05B11/00; G05B11/44; G05B11/48
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1875511A
Cited
US1394954A
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US1994728A
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US2052536A
Cited
US1974302A
Cited
US2043668A
Cited
US2271307A
Cited
US2322762A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |