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US2679343A
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Method and apparatus for filling thermostat tubes with mercury
Assignee: Vapor Heating Corp
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Filing: 1949-10-06
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Granted: 1954-05-25
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Expires: 1969-10-06
Abstract
No abstract record available.
Inventors
- 👤 William M Smith
- 👤 Benjamin F Freeberg
- 👤 Don A Brosseau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:09
CPC Classifications
B; B65; B65B; B65B31/00; B65B31/02; G; G01; G01K; G01K5/00; G01K5/02; G01K5/025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US449443A
Cited
US1345347A
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US845670A
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US1862821A
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US2178326A
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US2311930A
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US2501397A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-24 | 1957-11-23 | 1958-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-24 | 1961-11-23 | 1962-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-24 | 1965-11-23 | 1966-05-25 | $7700.00 | Window Closed / Lapsed |