US2575142A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Individual
•
Filing: 1949-08-19
•
Granted: 1951-11-13
•
Expires: 1969-08-19
Abstract
No abstract record available.
Inventors
- 👤 Sorkin Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:55
CPC Classifications
G; G10; G10H; G10H3/00; G10H3/12; G10H3/14; G10H3/16; G10H2230/00; G10H2230/045; G10H2230/245; Y; Y10; Y10S; Y10S84/00; Y10S84/15
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1587696A
Cited
US2102668A
Cited
US2399513A
Cited
US2439551A
Cited
US2460408A
Cited
US2486264A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-12 | 1955-05-14 | 1955-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-12 | 1959-05-14 | 1959-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-12 | 1963-05-14 | 1963-11-13 | $7700.00 | Window Closed / Lapsed |