US2544859A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Illuminating and magnifying map holder
Assignee: Individual
•
Filing: 1948-05-10
•
Granted: 1951-03-13
•
Expires: 1968-05-10
Abstract
No abstract record available.
Inventors
- 👤 Obert G Quam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:17
CPC Classifications
G; G02; G02B; G02B25/00; G02B25/02; F; F21; F21L; F21L2/00; F21V; F21V33/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1167266A
Cited
US1291710A
Cited
US1729660A
Cited
GB287015A
Cited
US1993589A
Cited
US2387306A
Cited
US2395760A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-12 | 1954-09-11 | 1955-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-12 | 1958-09-11 | 1959-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-12 | 1962-09-11 | 1963-03-13 | $7700.00 | Window Closed / Lapsed |