US2649700A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Absorption-refrigerating apparatus
Assignee: Hoover Co
•
Filing: 1949-05-21
•
Granted: 1953-08-25
•
Expires: 1969-05-21
Abstract
No abstract record available.
Inventors
- 👤 Glenn T Piper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:06
CPC Classifications
F; F25; F25B; F25B17/00; F25B17/08; Y; Y02; Y02A; Y02A30/00; Y02A30/27; Y02B; Y02B30/00; Y02B30/62
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US955762A
Cited
US1169349A
Cited
GB285798A
Cited
US1829370A
Cited
GB331540A
Cited
US1906154A
Cited
US1961890A
Cited
US1972426A
Cited
GB500269A
Cited
US2224219A
Cited
US2384460A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-24 | 1957-02-23 | 1957-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-24 | 1961-02-23 | 1961-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-24 | 1965-02-23 | 1965-08-25 | $7700.00 | Window Closed / Lapsed |