US2503500A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Head lamp
Assignee: Individual
•
Filing: 1944-12-20
•
Granted: 1950-04-11
•
Expires: 1964-12-20
Abstract
No abstract record available.
Inventors
- 👤 Clyde M Lowry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:18
CPC Classifications
F; F21; F21S; F21S41/00; F21S41/60; F21S41/68; F21S41/683; F21S41/689; F21S41/63; F21S41/635; F21S41/686
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1604370A
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US1633387A
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US1928431A
Cited
US1950576A
Cited
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GB509337A
Cited
US2170552A
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US2338901A
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US2300097A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-04-10 | 1953-10-10 | 1954-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-04-10 | 1957-10-10 | 1958-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-04-10 | 1961-10-10 | 1962-04-11 | $7700.00 | Window Closed / Lapsed |