US2643099A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vapor heated roll
Assignee: EIDP Inc
•
Filing: 1950-11-04
•
Granted: 1953-06-23
•
Expires: 1970-11-04
Abstract
No abstract record available.
Inventors
- 👤 Kinraide William Thomas Reed
- 👤 Walter C Eberlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:18
CPC Classifications
D; D21; D21F; D21F5/00; D21F5/02; Y; Y10; Y10S; Y10S165/00; Y10S165/135; Y10S165/139; Y10S165/156; Y10S165/158
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1575249A
Cited
GB304108A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-22 | 1956-12-22 | 1957-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-22 | 1960-12-22 | 1961-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-22 | 1964-12-22 | 1965-06-23 | $7700.00 | Window Closed / Lapsed |