US2659665A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reticles
Assignee: Eastman Kodak Co
•
Filing: 1950-10-27
•
Granted: 1953-11-17
•
Expires: 1970-10-27
Abstract
No abstract record available.
Inventors
- 👤 William F Parsons
- 👤 Ezra C Poling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:39
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
THE METHOD OF PRODUCING A DESIGN ON TRANSPARENT LEAD GLASS AND THE LIKE WHICH COMPRISES REDUCING THE LEAD ON AND ADJACENT ONE SURFACE OF THE GLASS TO PRODUCE AN OPAQUE LAYER THEREON AND FORMING A DESIGN THROUGH THE OPAQUE LAYER TO THE UNREDUCED CLEAR GLASS THEREUNDER.
Claim 2
Independent Claim
46 words
THE METHOD OF PRODUCING A DESIGN ON TRANSPARENT LEAD GLASS AND THE LIKE WHICH COMPRISES REDUCING THE LEAD ON AND ADJACENT ONE SURFACE OF THE GLASS TO PRODUCE AN OPAQUE LAYER THEREON AND FORMING A DESIGN THROUGH THE OPAQUE LAYER TO THE UNREDUCED CLEAR GLASS THEREUNDER.
References Cited (Backward Citations)
US748850A
Cited
US2043025A
Cited
US2154454A
Cited
US2529703A
Cited
US2482547A
Cited
US2482822A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-16 | 1957-05-18 | 1957-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-16 | 1961-05-18 | 1961-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-16 | 1965-05-18 | 1965-11-17 | $7700.00 | Window Closed / Lapsed |