Jann Hendrik Siefken
age:
58 years
appointments:
0 active
1 prior
primary industry:
Architectural and engineering activities; technical testing and analysis
about Jann
Since 2013, Dr Siefken has been a director of 1 company, the current directorship have a combined turnover of approximately £0.
Combined Valuation
Combined Turnover
active directorships over time
Jann Hendrik Siefken directorships
company | turnover | valuation | start | end | status | role |
|---|---|---|---|---|---|---|
| ams r&d uk ltd | Jun 2013 | Dec 2019 | Retired | Director |
