US2785668A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Convertible internal combustion engine and compressor
Assignee: AG fur UNTERNEHMUNGEN DER EISEN- und STAHLINDUSTRIE
•
Filing: 1954-11-05
•
Granted: 1957-03-19
•
Expires: 1974-11-05
Abstract
No abstract record available.
Inventors
- 👤 Walter T Dehmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:57
CPC Classifications
F; F04; F04B; F04B41/00; F04B41/04; F01; F01L; F01L13/00; F01L2760/00; F01L2760/003; F01L2760/005
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2191459A
Cited
US808210A
Cited
US1036321A
Cited
US1527456A
Cited
US1861534A
Cited
DE594737C
Cited
US2057354A
Cited
US2178152A
Cited
US2297376A
Cited
US2705480A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-18 | 1960-09-17 | 1961-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-18 | 1964-09-17 | 1965-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-18 | 1968-09-17 | 1969-03-19 | $7700.00 | Window Closed / Lapsed |