US2796313A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means and method of heat-joining glass articles
Assignee: American Optical Corp
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Filing: 1956-05-01
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Granted: 1957-06-18
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Expires: 1976-05-01
Abstract
No abstract record available.
Inventors
- 👤 Schumacher Elmer Weldon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:53
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/38; Y; Y10; Y10T; Y10T279/00; Y10T279/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-06-17 | 1960-12-17 | 1961-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-17 | 1964-12-17 | 1965-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-17 | 1968-12-17 | 1969-06-18 | $7700.00 | Window Closed / Lapsed |