US3068440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Switching devices
Assignee: Individual
•
Filing: 1960-05-05
•
Granted: 1962-12-11
•
Expires: 1980-05-05
Abstract
No abstract record available.
Inventors
- 👤 Mash Derek Hubert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:16
CPC Classifications
F; F21; F21V; F21V23/00; F21V23/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2735038A
Cited
US2758256A
Cited
US2773216A
Cited
US2783408A
Cited
US2945124A
Cited
US2833949A
Cited
US2867739A
Cited
US2922993A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-10 | 1966-06-11 | 1966-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-10 | 1970-06-11 | 1970-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-10 | 1974-06-11 | 1974-12-11 | $7700.00 | Window Closed / Lapsed |