US3266916A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Technical glass
Assignee: Ernst Leitz Wetzlar GmbH
•
Filing: 1962-08-22
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Granted: 1966-08-16
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Expires: 1982-08-22
Abstract
No abstract record available.
Inventors
- 👤 Bromer Heinz
- 👤 Meinert Norbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:09
CPC Classifications
C; C03; C03C; C03C3/00; C03C3/04; C03C3/062; C03C3/064; C03C3/066
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
23 words
TECHNICAL GLASS WITH A LINEAR COEFFICIENT OF THERMAL EXPANSION BETWEEN 10X10-6 AND 14.5X10-6 PER DEGREE C, MOLTEN FROM A MIXTURE CONSISTING ESSENTIALLY OF
Claim 2
Dependent Claim
23 words
TECHNICAL GLASS WITH A LINEAR COEFFICIENT OF THERMAL EXPANSION BETWEEN 10X10-6 AND 14.5X10-6 PER DEGREE C, MOLTEN FROM A MIXTURE CONSISTING ESSENTIALLY OF
References Cited (Backward Citations)
US3017279A
Cited
US3095321A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-15 | 1970-02-14 | 1970-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-15 | 1974-02-14 | 1974-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-15 | 1978-02-14 | 1978-08-16 | $7700.00 | Window Closed / Lapsed |