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US1930359A
Expired / Lapsed
US
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Assignee: Individual
•
Filing: 1931-11-30
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Granted: 1933-10-10
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Expires: 1951-11-30
Abstract
No abstract record available.
Inventors
- 👤 Hilgenberg David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:25
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/0001; G02B6/0011; G02B6/0066; G02B6/007; G02B6/0071; G09; G09F; G09F13/00; G09F13/18; G09F2013/1804; G09F2013/1836; Y; Y10; Y10S; Y10S362/00; Y10S362/812
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) | 1936-10-09 | 1937-04-10 | 1937-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-10-09 | 1941-04-10 | 1941-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-10-09 | 1945-04-10 | 1945-10-10 | $7700.00 | Window Closed / Lapsed |