US3459367A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transmission drive for rotary piston vacuum pump
Assignee: Balzers und Leybold Deutschland Holding AG
•
Filing: 1967-10-06
•
Granted: 1969-08-05
•
Expires: 1987-10-06
Abstract
No abstract record available.
Inventors
- 👤 Hansen Pfaff
- 👤 Hartmut Sinn
- 👤 Maximilian Wutz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:38
CPC Classifications
F; F04; F04C; F04C18/00; F04C18/22; F04C25/00; F04C18/30; F04C18/34
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) | 1972-08-04 | 1973-02-03 | 1973-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-04 | 1977-02-03 | 1977-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-04 | 1981-02-03 | 1981-08-05 | $7700.00 | Window Closed / Lapsed |