US1645178A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Supercharging of internal-combustion engines
Assignee: Individual
•
Filing: 1926-10-25
•
Granted: 1927-10-11
•
Expires: 1946-10-25
Abstract
No abstract record available.
Inventors
- 👤 Hall-Brown Archibald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:00
CPC Classifications
F; F02; F02B; F02B33/00; F02B33/44; F02B33/446; F02B39/00; F02B39/02; F02B39/04; F02B39/12; Y; Y10; Y10S; Y10S261/00; Y10S261/51; Y10T; Y10T74/00; Y10T74/19; Y10T74/19219; Y10T74/19377; Y10T74/19414; Y10T74/19419; Y10T74/19423; Y10T74/19428; Y10T74/19433
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1930-10-10 | 1931-04-11 | 1931-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-10-10 | 1935-04-11 | 1935-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-10-10 | 1939-04-11 | 1939-10-11 | $7700.00 | Window Closed / Lapsed |