US2643528A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Universal coupling
Assignee: Individual
•
Filing: 1946-03-13
•
Granted: 1953-06-30
•
Expires: 1966-03-13
Abstract
No abstract record available.
Inventors
- 👤 Robert W Hammarbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:14
CPC Classifications
F; F16; F16D; F16D3/00; F16D3/50; F16D3/02; F16D3/04; F16D3/16; F16D3/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US833153A
Cited
US839803A
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US1072622A
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US1244533A
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US1349329A
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US1346867A
Cited
US1525026A
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US1769107A
Cited
US1943942A
Cited
US2046087A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-29 | 1956-12-29 | 1957-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-29 | 1960-12-29 | 1961-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-29 | 1964-12-29 | 1965-06-30 | $7700.00 | Window Closed / Lapsed |