US2649634A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Individual
•
Filing: 1951-06-11
•
Granted: 1953-08-25
•
Expires: 1971-06-11
Abstract
No abstract record available.
Inventors
- 👤 Zelenay Ludwig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:02
CPC Classifications
A; A44; A44B; A44B1/00; A44B1/08; A44B1/12; Y; Y10; Y10T; Y10T24/00; Y10T24/36; Y10T24/367
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1446801A
Cited
DE641165C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-24 | 1957-02-23 | 1957-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-24 | 1961-02-23 | 1961-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-24 | 1965-02-23 | 1965-08-25 | $7700.00 | Window Closed / Lapsed |