US2087414A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coil cleaning device
Assignee: Individual
•
Filing: 1935-06-29
•
Granted: 1937-07-20
•
Expires: 1955-06-29
Abstract
No abstract record available.
Inventors
- 👤 Schaer Eugene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:24
CPC Classifications
B; B08; B08B; B08B9/00; B08B9/02; B08B9/027; B08B9/04; B08B9/053; B08B9/055; B08B9/0554; B08B9/057; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0402; Y10T137/0419; Y10T137/0424; Y10T137/0753; Y10T137/2496; Y10T137/2544; Y10T137/2554; Y10T137/8593; Y10T137/87265; Y10T137/87338; Y10T137/87362
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) | 1940-07-19 | 1941-01-18 | 1941-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-07-19 | 1945-01-18 | 1945-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-07-19 | 1949-01-18 | 1949-07-20 | $7700.00 | Window Closed / Lapsed |