US2707780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Changeable multicolored flashlight
Assignee: CARL VON DER CRONE AND CO
•
Filing: 1954-04-14
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Granted: 1955-05-03
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Expires: 1974-04-14
Abstract
No abstract record available.
Inventors
- 👤 Heller Karl
- 👤 Stumpf Heinz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:12
CPC Classifications
F; F21; F21V; F21V17/00; F21V17/02; F21L; F21L2/00; F21V9/00; F21V9/20
Claims Analysis
Total Claims: 0
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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) | 1958-05-02 | 1958-11-01 | 1959-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-02 | 1962-11-01 | 1963-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-02 | 1966-11-01 | 1967-05-03 | $7700.00 | Window Closed / Lapsed |