US1470030A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary compressor
Assignee: Individual
•
Filing: 1919-12-19
•
Granted: 1923-10-09
•
Expires: 1939-12-19
Abstract
No abstract record available.
Inventors
- 👤 Walter G E Rolaff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:27
CPC Classifications
F; F04; F04C; F04C28/00; F04C18/00; F04C18/30; F04C18/34; F04C18/344; F04C18/348
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) | 1926-10-08 | 1927-04-09 | 1927-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-10-08 | 1931-04-09 | 1931-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-10-08 | 1935-04-09 | 1935-10-09 | $7700.00 | Window Closed / Lapsed |