US2950856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas conveying devices
Assignee: Balzers Patent und Beteiligungs AG
•
Filing: 1956-02-28
•
Granted: 1960-08-30
•
Expires: 1976-02-28
Abstract
No abstract record available.
Inventors
- 👤 Feichtinger Heinrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:37
CPC Classifications
F; F04; F04B; F04B39/00; F04B39/0005; F04B39/0011; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/85978; Y10T137/86115
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1436443A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-30 | 1964-02-29 | 1964-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-30 | 1968-02-29 | 1968-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-30 | 1972-02-29 | 1972-08-30 | $7700.00 | Window Closed / Lapsed |