US2463237A
Expired / Lapsed
US
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Assignee: Individual
•
Filing: 1946-05-14
•
Granted: 1949-03-01
•
Expires: 1966-05-14
Abstract
No abstract record available.
Inventors
- 👤 Bialkowski Ludwik Seweryn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:01
CPC Classifications
E; E05; E05B; E05B29/00; Y; Y10; Y10T; Y10T70/00; Y10T70/70; Y10T70/7441; Y10T70/7486; Y10T70/7508; Y10T70/7559; Y10T70/7588; Y10T70/7593
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US925761A
Cited
US1234212A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-02-29 | 1952-08-30 | 1953-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-02-29 | 1956-08-30 | 1957-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-02-29 | 1960-08-30 | 1961-03-01 | $7700.00 | Window Closed / Lapsed |