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Patent US2743872A successfully refreshed from Google Patents.
US2743872A
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Heater valve mechanism
Assignee: Standard Thomson Corp
•
Filing: 1950-09-18
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Granted: 1956-05-01
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Expires: 1970-09-18
Abstract
No abstract record available.
Inventors
- 👤 Charles W Wood
- 👤 Paul F Early
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:33
CPC Classifications
B; B60; B60H; B60H1/00; B60H1/00485; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20006
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB212217A
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US1847911A
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US2106671A
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DE681192C
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US2391703A
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US2437883A
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US2538212A
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US2602593A
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US2595813A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-01 | 1959-10-31 | 1960-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-01 | 1963-10-31 | 1964-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-01 | 1967-10-31 | 1968-05-01 | $7700.00 | Window Closed / Lapsed |