US2883770A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Illuminated writing tablet having concealable illuminating means
Assignee: Individual
•
Filing: 1955-12-30
•
Granted: 1959-04-28
•
Expires: 1975-12-30
Abstract
No abstract record available.
Inventors
- 👤 Harry C Lieb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:07
CPC Classifications
B; B43; B43L; B43L3/00; B43L3/001; B43L3/002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1166930A
Cited
US1351935A
Cited
US1373783A
Cited
US2199311A
Cited
US2451979A
Cited
US2676818A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-27 | 1962-10-27 | 1963-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-27 | 1966-10-27 | 1967-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-27 | 1970-10-27 | 1971-04-28 | $7700.00 | Window Closed / Lapsed |