US3501924A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water wash of ice formed in vacuum freezing
Assignee: Carrier Corp
•
Filing: 1955-06-28
•
Granted: 1970-03-24
•
Expires: 1975-06-28
Abstract
No abstract record available.
Inventors
- 👤 Carlyle M Ashley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:32
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/22; C02F2103/00; C02F2103/08; Y; Y02; Y02A; Y02A20/00; Y02A20/124
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2259841A
Cited
FR605210A
Cited
US1865614A
Cited
US2009283A
Cited
US1931347A
Cited
US2324869A
Cited
US2315762A
Cited
FR985905A
Cited
US2419881A
Cited
US2617274A
Cited
US3425235A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-23 | 1973-09-22 | 1974-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-23 | 1977-09-22 | 1978-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-23 | 1981-09-22 | 1982-03-24 | $7700.00 | Window Closed / Lapsed |