Patent US4075319A successfully refreshed from Google Patents.
Patent US4446381A successfully refreshed from Google Patents.
Patent US2646919A successfully refreshed from Google Patents.
US2646919A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compressor control system
Assignee: Joy Manufacturing Co
•
Filing: 1945-04-14
•
Granted: 1953-07-28
•
Expires: 1965-04-14
Abstract
No abstract record available.
Inventors
- 👤 Jess M Bartholomew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:30
CPC Classifications
F; F04; F04B; F04B49/00; F04B49/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-27 | 1957-01-26 | 1957-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-27 | 1961-01-26 | 1961-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-27 | 1965-01-26 | 1965-07-28 | $7700.00 | Window Closed / Lapsed |