Patent US3223829A successfully refreshed from Google Patents.
US3223829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass sandwiches primarily for windows of optical instruments
Assignee: Individual
•
Filing: 1960-11-04
•
Granted: 1965-12-14
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Expires: 1980-11-04
Abstract
No abstract record available.
Inventors
- 👤 Davy John Rupert
- 👤 Alexander J N Hope
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:40
CPC Classifications
G; G02; G02B; G02B23/00; G02B23/16; H; H05; H05B; H05B3/00; H05B3/20; H05B3/22; H05B3/28; H05B3/283; H05B3/84; H05B3/86; H05B2203/00; H05B2203/014; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49101
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A GLASS SANDWICH FOR OPTICAL INSTRUMENTS INVOLVING OPTICAL MAGNIFICATION, COMPRISING A PAIR OF GLASS SHEETS DISPOSED IN SPACED SUBSTANTIALLY PARLLEL RELATION TO EACH OTHER, AT LEAST ONE OF SAID SHEETS BEING PROVIDED WITH ALIGNED CHANNELS ON ITS INNERMOST FACE, AN INTERVENING LAYER OF CEMENT OF TRANSPARENT THERMOSETTING MATERIAL BETWEEN SAID GLASS SHEETS, SECURING THE LATTER TOGETHER A SERIES OF FINE ELECTRICALLY CONDUCTIVE ELEMENTS POSITIONED BETWEEN SAID GLASS SHEETS IN THE CEMENT, AND BUS-BARS DISPOSED BETWEEN SAID GLASS SHEETS AND LOCATED IN SAID CHANNELS AND CONNECTED TO SAID CONDUCTIVE ELEMENTS, THE BUSBARS BEING FORMED FROM A COLLOIDAL DISPERSION OF ELECTICALLY CONDUCTIVE MATERIAL AND AN ORGANIC BINDING AGENT AND COMPLETELY SURROUNDING THE ELEMENT ENDS IN SITU.
Claim 2
Dependent Claim
114 words
A GLASS SANDWICH FOR OPTICAL INSTRUMENTS INVOLVING OPTICAL MAGNIFICATION, COMPRISING A PAIR OF GLASS SHEETS DISPOSED IN SPACED SUBSTANTIALLY PARLLEL RELATION TO EACH OTHER, AT LEAST ONE OF SAID SHEETS BEING PROVIDED WITH ALIGNED CHANNELS ON ITS INNERMOST FACE, AN INTERVENING LAYER OF CEMENT OF TRANSPARENT THERMOSETTING MATERIAL BETWEEN SAID GLASS SHEETS, SECURING THE LATTER TOGETHER A SERIES OF FINE ELECTRICALLY CONDUCTIVE ELEMENTS POSITIONED BETWEEN SAID GLASS SHEETS IN THE CEMENT, AND BUS-BARS DISPOSED BETWEEN SAID GLASS SHEETS AND LOCATED IN SAID CHANNELS AND CONNECTED TO SAID CONDUCTIVE ELEMENTS, THE BUSBARS BEING FORMED FROM A COLLOIDAL DISPERSION OF ELECTICALLY CONDUCTIVE MATERIAL AND AN ORGANIC BINDING AGENT AND COMPLETELY SURROUNDING THE ELEMENT ENDS IN SITU.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-13 | 1969-06-14 | 1969-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-13 | 1973-06-14 | 1973-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-13 | 1977-06-14 | 1977-12-14 | $7700.00 | Window Closed / Lapsed |