US2900494A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric torches
Assignee: Meyer Manufacturing Co Ltd
•
Filing: 1957-11-04
•
Granted: 1959-08-18
•
Expires: 1977-11-04
Abstract
No abstract record available.
Inventors
- 👤 Cheng Wing Gee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:50
CPC Classifications
F; F21; F21V; F21V23/00; F21V23/04; F21V23/0414; F21L; F21L2/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1203576A
Cited
US1955511A
Cited
US2253952A
Cited
US2181447A
Cited
US2259416A
Cited
GB700958A
Cited
US2727981A
Cited
US2716700A
Cited
US2823300A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-17 | 1963-02-16 | 1963-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-17 | 1967-02-16 | 1967-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-17 | 1971-02-16 | 1971-08-18 | $7700.00 | Window Closed / Lapsed |