US1433570A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Battery hand lamp
Assignee: —
•
Filing: —
•
Granted: 1922-10-31
•
Expires: 1939-10-31
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:45
CPC Classifications
F; F21; F21L; F21L4/00; F21V; F21V19/00; F21V19/04; F21V19/047; Y; Y10; Y10S; Y10S292/00; Y10S292/15
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) | 1925-10-30 | 1926-05-01 | 1926-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1929-10-30 | 1930-05-01 | 1930-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1933-10-30 | 1934-05-01 | 1934-10-31 | $7700.00 | Window Closed / Lapsed |