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US2844945A Expired / Lapsed US ⏱️ 0.0 years remaining

Reversible refrigerating systems

Assignee: Individual
•
Filing: 1951-09-19
•
Granted: 1958-07-29
•
Expires: 1971-09-19
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

No abstract record available.

Inventors

  • 👤 Muffly Glenn

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 03:28
CPC Classifications
F; F25; F25B; F25B25/00; F25B25/005; F25B13/00; F25B47/00; F25B47/02; F25B47/022; F25B47/025; F25B5/00; F25B1/00; F25B1/04; F25B2313/00; F25B2313/027; F25B2313/0271; F25B2313/02792; F25B2700/00; F25B2700/21; F25B2700/2104; F25B31/00; F25B31/002; F25D; F25D11/00; F25D11/02; F25D11/022; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/8593; Y10T137/86389; Y10T137/86405

Claims Analysis

Total Claims: 0
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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1961-07-28 1962-01-27 1962-07-29 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1965-07-28 1966-01-27 1966-07-29 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1969-07-28 1970-01-27 1970-07-29 $7700.00 Window Closed / Lapsed

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