Patent US1822389A successfully refreshed from Google Patents.
US1822389A
Expired / Lapsed
US
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Coupling
Assignee: Individual
•
Filing: 1929-09-30
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Granted: 1931-09-08
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Expires: 1949-09-30
Abstract
No abstract record available.
Inventors
- 👤 William W Blakely
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:44
CPC Classifications
F; F16; F16B; F16B7/00; F16B7/18; F16B2/00; F16B2/02; F16B2/06; F16B2/08; F16B7/04; F16B7/044; F16B7/048; F16B7/0486; F16B2200/00; F16B2200/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1934-09-07 | 1935-03-09 | 1935-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-09-07 | 1939-03-09 | 1939-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-09-07 | 1943-03-09 | 1943-09-08 | $7700.00 | Window Closed / Lapsed |