Patent US2107971A successfully refreshed from Google Patents.
US2107971A
Expired / Lapsed
US
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Jet pipe relay
Assignee: Askania Werke AG
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Filing: 1936-07-29
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Granted: 1938-02-08
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Expires: 1956-07-29
Abstract
No abstract record available.
Inventors
- 👤 Wunsch Guido
- 👤 Hartung Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:34
CPC Classifications
F; F15; F15C; F15C3/00; F15C3/10; F15C3/12; Y; Y10; Y10T; Y10T137/00; Y10T137/2278; Y10T137/2322; Y10T137/8593; Y10T137/877; Y10T137/87788
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1941-02-07 | 1941-08-09 | 1942-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-02-07 | 1945-08-09 | 1946-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-02-07 | 1949-08-09 | 1950-02-08 | $7700.00 | Window Closed / Lapsed |