Patent US921815A successfully refreshed from Google Patents.
US921815A
Expired / Lapsed
US
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Lamp-holder.
Assignee: Individual
•
Filing: 1908-05-22
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Granted: 1909-05-18
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Expires: 1928-05-22
Abstract
No abstract record available.
Inventors
- 👤 Heddwig L Erlandsson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:09
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/14; A61M5/1414; A61M5/1415; F; F16; F16B; F16B7/00; F16B7/04; F16B7/044; F16B7/048; F16B7/0493
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) | 1912-05-17 | 1912-11-16 | 1913-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1916-05-17 | 1916-11-16 | 1917-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1920-05-17 | 1920-11-16 | 1921-05-18 | $7700.00 | Window Closed / Lapsed |