US2922072A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image reproduction device
Assignee: GTE Sylvania Inc
•
Filing: 1957-12-05
•
Granted: 1960-01-19
•
Expires: 1977-12-05
Abstract
No abstract record available.
Inventors
- 👤 Floyd K Collins
- 👤 Oscar A Drake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:53
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/46; H01J29/58; H01J29/62; H01J29/622; H01J29/624
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2719243A
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US2732511A
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US2726347A
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US2773212A
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US2782333A
Cited
US2853639A
Cited
US2840739A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-18 | 1963-07-20 | 1964-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-18 | 1967-07-20 | 1968-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-18 | 1971-07-20 | 1972-01-19 | $7700.00 | Window Closed / Lapsed |