Patent DE456791C successfully refreshed from Google Patents.
Patent US2966233A successfully refreshed from Google Patents.
US2966233A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exhaust condensers
Assignee: Individual
•
Filing: 1959-04-24
•
Granted: 1960-12-27
•
Expires: 1979-04-24
Abstract
No abstract record available.
Inventors
- 👤 Robert E Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:49
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/005; F01N1/00; F01N1/16; F01N1/165; F01N3/02; F01N3/038; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7737; Y10T137/7837; Y10T137/7904; Y10T137/7908; Y10T137/7909; Y10T137/7913; Y10T137/7915; Y10T137/7918
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US342962A
Cited
US963463A
Cited
GB191112324A
Cited
US1820795A
Cited
US2057667A
Cited
US2591187A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-27 | 1964-06-27 | 1964-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-27 | 1968-06-27 | 1968-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-27 | 1972-06-27 | 1972-12-27 | $7700.00 | Window Closed / Lapsed |