US2722762A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for conveying visual indications in transparent materials
Assignee: Individual
•
Filing: 1951-09-04
•
Granted: 1955-11-08
•
Expires: 1971-09-04
Abstract
No abstract record available.
Inventors
- 👤 George S Krajian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:57
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/0001; G02B6/0011; G02B6/0013; G02B6/0023; G02B6/0031; A; A63; A63H; A63H33/00; A63H33/22; G02B6/0033; G02B6/0066; G02B6/0068; G02B6/0081; G02B6/0086; G02B6/0091; G09; G09F; G09F13/00; G09F13/18; G09F2013/1872; G09F2013/1877
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1146361A
Cited
US1403630A
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US1707965A
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US2446674A
Cited
US2524657A
Cited
US2507909A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-07 | 1959-05-09 | 1959-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-07 | 1963-05-09 | 1963-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-07 | 1967-05-09 | 1967-11-08 | $7700.00 | Window Closed / Lapsed |