Patent US3918980A successfully refreshed from Google Patents.
Patent US3496732A successfully refreshed from Google Patents.
US3496732A
Expired / Lapsed
US
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Control system for refrigerated enclosures
Assignee: Dual Jet Refrigeration Co
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Filing: 1969-02-14
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Granted: 1970-02-24
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Expires: 1989-02-14
Abstract
No abstract record available.
Inventors
- 👤 Robert E Vogel
- 👤 Bernard A Hermanson
- 👤 Earl G Kuykendall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:14
CPC Classifications
A; A47; A47F; A47F3/00; A47F3/04; A47F3/0478; A47F3/0439; A47F3/0443; A47F3/0447; F; F25; F25D; F25D29/00; G; G05; G05D; G05D23/00; G05D23/19; G05D23/275; G05D23/27535; G05D23/27537; F25B; F25B2600/00; F25B2600/23; F25B2700/00; F25B2700/21; F25B2700/2117
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) | 1973-02-23 | 1973-08-25 | 1974-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-23 | 1977-08-25 | 1978-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-23 | 1981-08-25 | 1982-02-24 | $7700.00 | Window Closed / Lapsed |