US1799304A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lighting appliance
Assignee: Holophane Corp
•
Filing: 1928-09-07
•
Granted: 1931-04-07
•
Expires: 1948-09-07
Abstract
No abstract record available.
Inventors
- 👤 Henry L Logan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:02
CPC Classifications
F; F21; F21V; F21V21/00; F21V21/02; F21V21/04; F21S; F21S8/00; F21S8/02; F21V17/00; F21V17/10; F21V17/18; F21V19/00; F21V19/02; F21V3/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1934-04-06 | 1934-10-06 | 1935-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-04-06 | 1938-10-06 | 1939-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-04-06 | 1942-10-06 | 1943-04-07 | $7700.00 | Window Closed / Lapsed |