US1586464A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Individual
•
Filing: 1924-01-22
•
Granted: 1926-05-25
•
Expires: 1944-01-22
Abstract
No abstract record available.
Inventors
- 👤 Raleigh M Pearson
- 👤 Letzig William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:52
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/0001; G02B6/0011; G02B6/0013; G02B6/0015; G02B6/002; G02B6/0021; G02B6/0066; G02B6/0068; G09; G09F; G09F13/00; G09F13/04; G09F13/14; G09F13/18; G09F2013/1804; G09F2013/1831
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1929-05-24 | 1929-11-23 | 1930-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1933-05-24 | 1933-11-23 | 1934-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1937-05-24 | 1937-11-23 | 1938-05-25 | $7700.00 | Window Closed / Lapsed |