US3087368A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Keyboard chassis assembly
Assignee: Pratt Read and Co
•
Filing: 1960-07-14
•
Granted: 1963-04-30
•
Expires: 1980-07-14
Abstract
No abstract record available.
Inventors
- 👤 Frank M Lund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:53
CPC Classifications
G; G10; G10C; G10C3/00; G10C3/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A KEY FOR KEYBOARD MUSICAL INSTRUMENTS COMPRISING AN ELONGATED CHANNEL-SHAPED MEMBER, SAID MEMBER HAVING A WEB PORTION AND MARGINAL FLANGES ADAPTED TO EXTEND DOWNWARDLY FROM SAID WEB PORTION, PIVOT MEANS ADJACENT ONE END OF SAID MEMBER OPERATIVELY ASSOCIATED WITH SAID WEB AND FLANGES, AND STOP MEANS ADJACENT THE OPPOSITE END OF SAID MEMBER ADAPTED TO COACT WITH A FIXED MEMBER TO LIMIT VERTICAL AND LATERAL PIVOTAL MOVEMENT OF SAID KEY.
Claim 2
Dependent Claim
70 words
A KEY FOR KEYBOARD MUSICAL INSTRUMENTS COMPRISING AN ELONGATED CHANNEL-SHAPED MEMBER, SAID MEMBER HAVING A WEB PORTION AND MARGINAL FLANGES ADAPTED TO EXTEND DOWNWARDLY FROM SAID WEB PORTION, PIVOT MEANS ADJACENT ONE END OF SAID MEMBER OPERATIVELY ASSOCIATED WITH SAID WEB AND FLANGES, AND STOP MEANS ADJACENT THE OPPOSITE END OF SAID MEMBER ADAPTED TO COACT WITH A FIXED MEMBER TO LIMIT VERTICAL AND LATERAL PIVOTAL MOVEMENT OF SAID KEY.
References Cited (Backward Citations)
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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) | 1966-04-29 | 1966-10-29 | 1967-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-29 | 1970-10-29 | 1971-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-29 | 1974-10-29 | 1975-04-30 | $7700.00 | Window Closed / Lapsed |