US2781444A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lamp construction
Assignee: Individual
•
Filing: 1955-02-14
•
Granted: 1957-02-12
•
Expires: 1975-02-14
Abstract
No abstract record available.
Inventors
- 👤 Noguchi Isamu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:47
CPC Classifications
F; F21; F21S; F21S6/00; F21S6/002; F21S6/005; F21V; F21V1/00; F21V1/02; F21V1/06; F21V17/00; F21V17/007
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-02-12 | 1960-08-13 | 1961-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-12 | 1964-08-13 | 1965-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-12 | 1968-08-13 | 1969-02-12 | $7700.00 | Window Closed / Lapsed |