US2866054A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple variable volume control strip
Assignee: Duracell Inc USA
•
Filing: 1955-09-16
•
Granted: 1958-12-23
•
Expires: 1975-09-16
Abstract
No abstract record available.
Inventors
- 👤 Berton A Purdy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:03
CPC Classifications
H; H01; H01C; H01C10/00; H01C10/30; H01C10/32; H01C10/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1386150A
Cited
US1778306A
Cited
GB382248A
Cited
US2492286A
Cited
US2536181A
Cited
GB694859A
Cited
US2654641A
Cited
GB667719A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-22 | 1962-06-23 | 1962-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-22 | 1966-06-23 | 1966-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-22 | 1970-06-23 | 1970-12-23 | $7700.00 | Window Closed / Lapsed |