Patent US2803398A successfully refreshed from Google Patents.
Patent US1652192A successfully refreshed from Google Patents.
US1652192A
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Assignee: CM Hall Lamp Co
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Filing: 1926-08-18
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Granted: 1927-12-13
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Expires: 1946-08-18
Abstract
No abstract record available.
Inventors
- 👤 Frank L Bamford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:08
CPC Classifications
F; F21; F21S; F21S41/00; F21S41/20; F21S41/29
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) | 1930-12-12 | 1931-06-13 | 1931-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1934-12-12 | 1935-06-13 | 1935-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1938-12-12 | 1939-06-13 | 1939-12-13 | $7700.00 | Window Closed / Lapsed |