US3434656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubrication system for rotary vane compressors
Assignee: Worthington Corp
•
Filing: 1967-09-14
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Granted: 1969-03-25
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Expires: 1987-09-14
Abstract
No abstract record available.
Inventors
- 👤 Friedrich O Bellmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:20
CPC Classifications
F; F04; F04C; F04C29/00; F04C29/02; F04C29/023
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB783339A
Cited
US3040974A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-24 | 1972-09-23 | 1973-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-24 | 1976-09-23 | 1977-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-24 | 1980-09-23 | 1981-03-25 | $7700.00 | Window Closed / Lapsed |