Patent US2308313A successfully refreshed from Google Patents.
US2308313A
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Refrigeration control structure
Assignee: Penn Electric Switch Co
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Filing: 1940-11-04
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Granted: 1943-01-12
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Expires: 1960-11-04
Abstract
No abstract record available.
Inventors
- 👤 Burton E Shaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:45
CPC Classifications
F; F25; F25B; F25B49/00; F25B49/02; F25B49/025; G; G05; G05D; G05D23/00; G05D23/01; G05D23/12; G05D23/121; G05D23/122; F25B2600/00; F25B2600/02; F25B2600/025; F25B2600/0251; F25B2700/00; F25B2700/19; F25B2700/193; F25B2700/1931; F25B2700/1933; F25B2700/21; F25B2700/2104
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1946-01-11 | 1946-07-13 | 1947-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-01-11 | 1950-07-13 | 1951-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-01-11 | 1954-07-13 | 1955-01-12 | $7700.00 | Window Closed / Lapsed |