Patent US2581960A successfully refreshed from Google Patents.
US2581960A
Expired / Lapsed
US
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Automatic grid cutting machine
Assignee: GTE Sylvania Inc
•
Filing: 1946-08-26
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Granted: 1952-01-08
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Expires: 1966-08-26
Abstract
No abstract record available.
Inventors
- 👤 Harold P Kronenwetter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:22
CPC Classifications
H; H01; H01J; H01J19/00; H01J2893/00; H01J2893/0001; H01J2893/0012; H01J2893/0026; Y; Y10; Y10T; Y10T83/00; Y10T83/04; Y10T83/0586; Y10T83/444; Y10T83/4463; Y10T83/4465
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US425846A
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US1083484A
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US1283976A
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US1407712A
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US1826016A
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US1814586A
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US1883047A
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US2069424A
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US2341011A
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US2392870A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-07 | 1955-07-09 | 1956-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-07 | 1959-07-09 | 1960-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-07 | 1963-07-09 | 1964-01-08 | $7700.00 | Window Closed / Lapsed |