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Patent US2722392A successfully refreshed from Google Patents.
US2722392A
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Connecting elements for a base and platform
Assignee: United Engineering and Foundry Co
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Filing: 1949-04-02
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Granted: 1955-11-01
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Expires: 1969-04-02
Abstract
No abstract record available.
Inventors
- 👤 Howard H Talbot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:58
CPC Classifications
B; B21; B21B; B21B31/00; B21B31/02; B21B31/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US912760A
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US1699636A
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US1957472A
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USRE19448E
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US1954242A
Cited
US2373341A
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US2418332A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-31 | 1959-05-02 | 1959-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-31 | 1963-05-02 | 1963-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-31 | 1967-05-02 | 1967-11-01 | $7700.00 | Window Closed / Lapsed |