US2016341A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Condenser swirl
Assignee: Individual
•
Filing: 1935-07-08
•
Granted: 1935-10-08
•
Expires: 1955-07-08
Abstract
No abstract record available.
Inventors
- 👤 Wilbur B Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:26
CPC Classifications
F; F28; F28B; F28B9/00; F28B9/04; F28D; F28D3/00; F28D3/04; F28F; F28F25/00; F28F25/02; F28F25/06; Y; Y10; Y10S; Y10S165/00; Y10S165/355; Y10S165/40; Y10S165/427; Y10S165/428
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) | 1938-10-07 | 1939-04-08 | 1939-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-10-07 | 1943-04-08 | 1943-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-10-07 | 1947-04-08 | 1947-10-08 | $7700.00 | Window Closed / Lapsed |