Patent US1405221A successfully refreshed from Google Patents.
US1405221A
Expired / Lapsed
US
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Magnetic lamp holder
Assignee: EDWIN A PARKFORD
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Filing: 1920-04-20
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Granted: 1922-01-31
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Expires: 1940-04-20
Abstract
No abstract record available.
Inventors
- 👤 Howard C Jenkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:45
CPC Classifications
F; F21; F21V; F21V21/00; F21V21/08; F21V21/096; F21V21/0965; Y; Y10; Y10S; Y10S211/00; Y10S211/01
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) | 1925-01-30 | 1925-08-01 | 1926-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1929-01-30 | 1929-08-01 | 1930-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1933-01-30 | 1933-08-01 | 1934-01-31 | $7700.00 | Window Closed / Lapsed |