US2420435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Individual
•
Filing: 1945-09-25
•
Granted: 1947-05-13
•
Expires: 1965-09-25
Abstract
No abstract record available.
Inventors
- 👤 Lackow Emil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:01
CPC Classifications
A; A44; A44C; A44C5/00; A44C5/18; A44C5/22; Y; Y10; Y10S; Y10S24/00; Y10S24/30; Y10S24/43; Y10T; Y10T24/00; Y10T24/40; Y10T24/4002; Y10T24/4028; Y10T24/4037; Y10T24/45; Y10T24/45005; Y10T24/45037; Y10T24/45063
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2394856A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-05-12 | 1950-11-11 | 1951-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-05-12 | 1954-11-11 | 1955-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-05-12 | 1958-11-11 | 1959-05-13 | $7700.00 | Window Closed / Lapsed |