US2919559A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling system
Assignee: KGI Inc
•
Filing: 1956-09-20
•
Granted: 1960-01-05
•
Expires: 1976-09-20
Abstract
No abstract record available.
Inventors
- 👤 Fred C Koch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:23
CPC Classifications
F; F28; F28D; F28D5/00; F28C; F28C3/00; F28C3/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US852543A
Cited
US1732963A
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US1861158A
Cited
US1949522A
Cited
US2022740A
Cited
US1986653A
Cited
US2088962A
Cited
US2012910A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-04 | 1963-07-06 | 1964-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-04 | 1967-07-06 | 1968-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-04 | 1971-07-06 | 1972-01-05 | $7700.00 | Window Closed / Lapsed |