US1538754A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric-motor-driven compressor
Assignee: Individual
•
Filing: 1923-06-30
•
Granted: 1925-05-19
•
Expires: 1943-06-30
Abstract
No abstract record available.
Inventors
- 👤 Spohrer Gregory John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:52
CPC Classifications
B; B60; B60S; B60S5/00; B60S5/04; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7879; Y10T137/7888; Y10T137/789; Y10T137/8593; Y10T137/85978; Y10T137/86035; Y10T137/86051
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) | 1928-05-18 | 1928-11-17 | 1929-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1932-05-18 | 1932-11-17 | 1933-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1936-05-18 | 1936-11-17 | 1937-05-19 | $7700.00 | Window Closed / Lapsed |