US2622779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for pressurizing and sealing thermostat tubes
Assignee: Vapor Heating Corp
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Filing: 1950-02-25
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Granted: 1952-12-23
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Expires: 1970-02-25
Abstract
No abstract record available.
Inventors
- 👤 William M Smith
- 👤 Don A Brosseau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:31
CPC Classifications
G; G01; G01K; G01K5/00; G01K5/02; G01K5/025; Y; Y10; Y10S; Y10S53/00; Y10S53/03
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-23 | 1956-06-23 | 1956-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-23 | 1960-06-23 | 1960-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-23 | 1964-06-23 | 1964-12-23 | $7700.00 | Window Closed / Lapsed |