Patent US3428408A successfully refreshed from Google Patents.
US3428408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impact type of piezoelectric mechanism by way of an electric source for lighting
Assignee: KANTO GASUKIGU KK
•
Filing: 1966-12-06
•
Granted: 1969-02-18
•
Expires: 1986-12-06
Abstract
No abstract record available.
Inventors
- 👤 Yoshiaki Ameyama
- 👤 Akira Takeda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:46
CPC Classifications
F; F23; F23Q; F23Q2/00; F23Q2/28; F23Q2/285; F23Q2/287; F23Q3/00; F23Q3/002
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
CA606498A
Cited
US3200295A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-18 | 1972-08-19 | 1973-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-18 | 1976-08-19 | 1977-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-18 | 1980-08-19 | 1981-02-18 | $7700.00 | Window Closed / Lapsed |