US2867376A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil heating arrangement for rotary fluid compressor
Assignee: Worthington Corp
•
Filing: 1954-03-25
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Granted: 1959-01-06
•
Expires: 1974-03-25
Abstract
No abstract record available.
Inventors
- 👤 Alexander J Keir
- 👤 Sylvan R Hirsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:10
CPC Classifications
F; F04; F04C; F04C29/00; F04C29/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1651156A
Cited
US1867519A
Cited
US1989585A
Cited
US2260538A
Cited
FR879736A
Cited
FR1040203A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-05 | 1962-07-07 | 1963-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-05 | 1966-07-07 | 1967-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-05 | 1970-07-07 | 1971-01-06 | $7700.00 | Window Closed / Lapsed |