Patent US2997857A successfully refreshed from Google Patents.
US2997857A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigerating apparatus
Assignee: Motors Liquidation Co
•
Filing: 1958-09-04
•
Granted: 1961-08-29
•
Expires: 1978-09-04
Abstract
No abstract record available.
Inventors
- 👤 Harry F Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:57
CPC Classifications
F; F25; F25D; F25D17/00; F25D17/04; F25D17/042; F25D17/045; F25D17/06; F25D17/062; F25D17/065; F25D2317/00; F25D2317/06; F25D2317/065; F25D2317/0651; F25D2317/068; F25D2317/0683
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1964-08-28 | 1965-02-27 | 1965-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-28 | 1969-02-27 | 1969-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-28 | 1973-02-27 | 1973-08-29 | $7700.00 | Window Closed / Lapsed |