US1930254A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light regulating device
Assignee: Individual
•
Filing: 1931-08-18
•
Granted: 1933-10-10
•
Expires: 1951-08-18
Abstract
No abstract record available.
Inventors
- 👤 Lester S Simon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:52
CPC Classifications
E; E06; E06B; E06B9/00; E06B9/24; E06B9/26; E04; E04D; E04D13/00; E04D13/03; E04D13/033; E05; E05F; E05F17/00
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 |