Patent US2811632A successfully refreshed from Google Patents.
US2811632A
Expired / Lapsed
US
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Illuminated writing instrument
Assignee: Individual
•
Filing: 1955-08-08
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Granted: 1957-10-29
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Expires: 1975-08-08
Abstract
No abstract record available.
Inventors
- 👤 Earl H Bartlett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:08
CPC Classifications
B; B43; B43K; B43K29/00; B43K29/10; Y; Y10; Y10S; Y10S116/00; Y10S116/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR978634A
Cited
US2261320A
Cited
FR1036697A
Cited
US2663791A
Cited
US2706769A
Cited
FR1074242A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-28 | 1961-04-29 | 1961-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-28 | 1965-04-29 | 1965-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-28 | 1969-04-29 | 1969-10-29 | $7700.00 | Window Closed / Lapsed |