US2123479A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filling and vent plug for electric storage batteries
Assignee: ZF International UK Ltd
•
Filing: 1935-11-04
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Granted: 1938-07-12
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Expires: 1955-11-04
Abstract
No abstract record available.
Inventors
- 👤 Spencer George Douglas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:29
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/42; H01M10/48; H01M10/484; H01M50/00; H01M50/30; H01M50/308; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1941-07-11 | 1942-01-10 | 1942-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-07-11 | 1946-01-10 | 1946-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-07-11 | 1950-01-10 | 1950-07-12 | $7700.00 | Window Closed / Lapsed |