US3441964A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Life jacket
Assignee: Bernhardt Apparatebau GmbH and Co
•
Filing: 1967-01-23
•
Granted: 1969-05-06
•
Expires: 1987-01-23
Abstract
No abstract record available.
Inventors
- 👤 Helmut Koch
- 👤 Hans Heinrich Heidemann
- 👤 Peter Birk
- 👤 Hans-Jurgen Busch
- 👤 Jost Bernhardt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:49
CPC Classifications
B; B63; B63C; B63C9/00; B63C9/08; B63C9/11; B63C9/115; B63C9/125; B63C9/1255
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) | 1972-05-05 | 1972-11-04 | 1973-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-05 | 1976-11-04 | 1977-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-05 | 1980-11-04 | 1981-05-06 | $7700.00 | Window Closed / Lapsed |