Patent US2897561A successfully refreshed from Google Patents.
Patent US1348617A successfully refreshed from Google Patents.
US1348617A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric headlight
Assignee: Individual
•
Filing: 1918-06-29
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Granted: 1920-08-03
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Expires: 1938-06-29
Abstract
No abstract record available.
Inventors
- 👤 William H Zorger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:03
CPC Classifications
F; F21; F21V; F21V5/00; F21V5/02; F21S; F21S41/00; F21S41/20; F21S41/28; F21V17/00; F21V17/04; F21V5/04; F21V13/00; F21V13/02; F21V13/04
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) | 1923-08-03 | 1924-02-02 | 1924-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1927-08-03 | 1928-02-02 | 1928-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1931-08-03 | 1932-02-02 | 1932-08-03 | $7700.00 | Window Closed / Lapsed |