Patent US2122352A successfully refreshed from Google Patents.
US2122352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary blower, gas meter, liquid meter, rotary compressor, and rotary pump
Assignee: Individual
•
Filing: 1936-04-01
•
Granted: 1938-06-28
•
Expires: 1956-04-01
Abstract
No abstract record available.
Inventors
- 👤 Rummel Roman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:59
CPC Classifications
F; F04; F04B; F04B1/00; F04B1/04; F04B1/0404; F04B1/0452; F04B1/0456; F01; F01B; F01B13/00; F01B13/04; F01B13/06; F01B19/00; F04B45/00; F04B45/02; F04B45/022
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) | 1941-06-27 | 1941-12-27 | 1942-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-06-27 | 1945-12-27 | 1946-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-06-27 | 1949-12-27 | 1950-06-28 | $7700.00 | Window Closed / Lapsed |