US2505709A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compressor for refrigerating apparatus
Assignee: CHICAGO SEAL Co
•
Filing: 1944-05-03
•
Granted: 1950-04-25
•
Expires: 1964-05-03
Abstract
No abstract record available.
Inventors
- 👤 Herman M Goldberg
- 👤 Arvid E Karlberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:36
CPC Classifications
F; F25; F25B; F25B31/00; F25B31/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1470548A
Cited
US1722284A
Cited
US1761036A
Cited
US1738104A
Cited
US1917760A
Cited
US2041128A
Cited
US1945338A
Cited
US2019689A
Cited
US2106488A
Cited
US2096297A
Cited
US2136097A
Cited
US2150347A
Cited
US2264847A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-04-24 | 1953-10-24 | 1954-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-04-24 | 1957-10-24 | 1958-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-04-24 | 1961-10-24 | 1962-04-25 | $7700.00 | Window Closed / Lapsed |