US1310682A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Duplex turbo-compressor.
Assignee: Individual
•
Filing: 1918-05-14
•
Granted: 1919-07-22
•
Expires: 1938-05-14
Abstract
No abstract record available.
Inventors
- 👤 Earl H Sherbondy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:48
CPC Classifications
F; F02; F02B; F02B37/00; F02B37/12; F02B37/18; F02B37/183; F02B37/007; F02C; F02C6/00; F02C6/04; F02C6/10; F02C6/12; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y02T50/00; Y02T50/60; Y10; Y10S; Y10S261/00; Y10S261/51
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) | 1922-07-21 | 1923-01-20 | 1923-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1926-07-21 | 1927-01-20 | 1927-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1930-07-21 | 1931-01-20 | 1931-07-22 | $7700.00 | Window Closed / Lapsed |