Patent US2830683A successfully refreshed from Google Patents.
US2830683A
Expired / Lapsed
US
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Means for securing inverted t-shaped members in a metal grid
Assignee: Individual
•
Filing: 1954-02-23
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Granted: 1958-04-15
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Expires: 1974-02-23
Abstract
No abstract record available.
Inventors
- 👤 Griffith Steward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:53
CPC Classifications
E; E04; E04B; E04B9/00; E04B9/06; E04B9/12; E04B9/127; E04B1/00; E04B1/38; E04B1/58; E04B1/5806; E04B1/5812; Y; Y10; Y10T; Y10T403/00; Y10T403/70; Y10T403/7001
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US430000A
Cited
US1420099A
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US1412763A
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US1956809A
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US2049925A
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US2120725A
Cited
US2254558A
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US2351127A
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US2710679A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-14 | 1961-10-14 | 1962-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-14 | 1965-10-14 | 1966-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-14 | 1969-10-14 | 1970-04-15 | $7700.00 | Window Closed / Lapsed |