US2634904A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined refrigerating compressor and oil separator
Assignee: Individual
•
Filing: 1948-04-19
•
Granted: 1953-04-14
•
Expires: 1968-04-19
Abstract
No abstract record available.
Inventors
- 👤 Leonard F Clerc
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:03
CPC Classifications
F; F04; F04C; F04C29/00; F04C23/00; F04C29/02; F04C29/026; Y; Y10; Y10S; Y10S418/00; Y10S418/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1336845A
Cited
US1526449A
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US1776921A
Cited
US1897547A
Cited
US1989864A
Cited
US1967035A
Cited
US2335284A
Cited
US2289441A
Cited
US2465887A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-13 | 1956-10-13 | 1957-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-13 | 1960-10-13 | 1961-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-13 | 1964-10-13 | 1965-04-14 | $7700.00 | Window Closed / Lapsed |