US1922929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for keying members on shafts
Assignee: J C LAWRENCE
•
Filing: 1931-02-02
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Granted: 1933-08-15
•
Expires: 1951-02-02
Abstract
No abstract record available.
Inventors
- 👤 Martin T Chamberlain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:28
CPC Classifications
F; F16; F16D; F16D1/00; F16D1/06; F16D1/08; F16D1/0876; F16B; F16B2200/00; F16B2200/40; F16B2200/403; Y; Y10; Y10S; Y10S411/00; Y10S411/924; Y10S411/926; Y10S411/927; Y10S411/944; Y10S411/955; Y10S411/956; Y10S411/961; Y10S411/974; Y10S411/983; Y10S411/998
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) | 1936-08-14 | 1937-02-13 | 1937-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-08-14 | 1941-02-13 | 1941-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-08-14 | 1945-02-13 | 1945-08-15 | $7700.00 | Window Closed / Lapsed |