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US1355652A
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Bearing for turbine-driven blowers
Assignee: COPPUS ENGINEERING AND EQUIPME
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Filing: 1917-07-18
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Granted: 1920-10-12
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Expires: 1937-07-18
Abstract
No abstract record available.
Inventors
- 👤 Frans H C Coppus
- 👤 Wyman H Varney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:28
CPC Classifications
F; F01; F01D; F01D25/00; F01D25/18; F01D25/183; Y; Y10; Y10S; Y10S16/00; Y10S16/27; Y10T; Y10T29/00; Y10T29/49; Y10T29/49636; Y10T29/49696
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) | 1923-10-12 | 1924-04-12 | 1924-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1927-10-12 | 1928-04-12 | 1928-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1931-10-12 | 1932-04-12 | 1932-10-12 | $7700.00 | Window Closed / Lapsed |