Patent US3093137A successfully refreshed from Google Patents.
Patent US2884228A successfully refreshed from Google Patents.
US2884228A
Expired / Lapsed
US
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Air conditioning units
Assignee: Buffalo Forge Co
•
Filing: 1956-01-03
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Granted: 1959-04-28
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Expires: 1976-01-03
Abstract
No abstract record available.
Inventors
- 👤 Jorgensen Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:56
CPC Classifications
F; F24; F24F; F24F11/00; F24F11/70; F24F11/80; F24F11/81; F24F1/00; F24F1/02; F24F1/032; F24F1/0323; F24F1/0328; F24F1/035
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB379663A
Cited
US1605119A
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US1849061A
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US1927869A
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US2079562A
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US2093691A
Cited
US2283928A
Cited
US2327663A
Cited
US2739794A
Cited
US2743908A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-27 | 1962-10-27 | 1963-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-27 | 1966-10-27 | 1967-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-27 | 1970-10-27 | 1971-04-28 | $7700.00 | Window Closed / Lapsed |