US1638183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gyratory pump or compressor
Assignee: Individual
•
Filing: 1926-10-26
•
Granted: 1927-08-09
•
Expires: 1946-10-26
Abstract
No abstract record available.
Inventors
- 👤 Frans Ivar L Bylger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:36
CPC Classifications
F; F01; F01C; F01C9/00; F01C9/005
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) | 1930-08-08 | 1931-02-07 | 1931-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-08-08 | 1935-02-07 | 1935-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-08-08 | 1939-02-07 | 1939-08-09 | $7700.00 | Window Closed / Lapsed |