Patent US2719544A successfully refreshed from Google Patents.
US2719544A
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Apparatus for making finely meshed grids
Assignee: RCA Corp
•
Filing: 1950-01-25
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Granted: 1955-10-04
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Expires: 1970-01-25
Abstract
No abstract record available.
Inventors
- 👤 Hirmann Julius
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:33
CPC Classifications
B; B21; B21F; B21F23/00; B21F27/00; B21F27/12; B21F27/121; B21F27/122; B21F27/124; H; H01; H01J; H01J19/00; H01J2893/00; H01J2893/0001; H01J2893/0012; H01J2893/0019; H01J2893/0022; H01J2893/0025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2371224A
Cited
US384404A
Cited
US400285A
Cited
US592453A
Cited
DE460208C
Cited
US383088A
Cited
US1692529A
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US1897460A
Cited
US1976522A
Cited
US2213585A
Cited
US2328085A
Cited
US2411988A
Cited
US2441228A
Cited
US2503987A
Cited
US2540833A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-03 | 1959-04-04 | 1959-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-03 | 1963-04-04 | 1963-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-03 | 1967-04-04 | 1967-10-04 | $7700.00 | Window Closed / Lapsed |