Patent US2809539A successfully refreshed from Google Patents.
Patent US2175106A successfully refreshed from Google Patents.
US2175106A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Supercharger
Assignee: Individual
•
Filing: 1938-05-05
•
Granted: 1939-10-03
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Expires: 1958-05-05
Abstract
No abstract record available.
Inventors
- 👤 Thomas H Burns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:48
CPC Classifications
F; F02; F02M; F02M35/00; F02M35/10; F02M35/10006; F02M35/10013; F02M35/10091; F02M35/10118; F02M35/1015; F02M35/10157; F02M35/16; F02M35/161; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y10; Y10T; Y10T137/00; Y10T137/0536
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) | 1942-10-02 | 1943-04-03 | 1943-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-10-02 | 1947-04-03 | 1947-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-10-02 | 1951-04-03 | 1951-10-03 | $7700.00 | Window Closed / Lapsed |