US2820658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Connecting means for structural elements
Assignee: Individual
•
Filing: 1953-12-04
•
Granted: 1958-01-21
•
Expires: 1973-12-04
Abstract
No abstract record available.
Inventors
- 👤 Emil A Bender
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:52
CPC Classifications
E; E21; E21B; E21B15/00; E04; E04G; E04G25/00; E04G25/04; E04G25/06; E04G25/066; Y; Y10; Y10T; Y10T403/00; Y10T403/16; Y10T403/1616
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB191201996A
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FR948666A
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DE830489C
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DE830491C
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DE811106C
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-20 | 1961-07-22 | 1962-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-20 | 1965-07-22 | 1966-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-20 | 1969-07-22 | 1970-01-21 | $7700.00 | Window Closed / Lapsed |