US2793471A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for automatically scoring and cracking of glass sheets
Assignee: Pentax Corp
•
Filing: 1954-03-26
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Granted: 1957-05-28
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Expires: 1974-03-26
Abstract
No abstract record available.
Inventors
- 👤 Kurata Motoharu
- 👤 Shibata Sunao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:24
CPC Classifications
C; C03; C03B; C03B33/00; C03B33/02; C03B33/023; C03B33/033; Y; Y10; Y10T; Y10T225/00; Y10T225/30; Y10T225/307; Y10T225/321; Y10T225/325
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) | 1960-05-27 | 1960-11-26 | 1961-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-27 | 1964-11-26 | 1965-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-27 | 1968-11-26 | 1969-05-28 | $7700.00 | Window Closed / Lapsed |