Patent US3418877A successfully refreshed from Google Patents.
US3418877A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Musical instrument construction
Assignee: Individual
•
Filing: 1966-12-02
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Granted: 1968-12-31
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Expires: 1986-12-02
Abstract
No abstract record available.
Inventors
- 👤 Ito Michio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:06
CPC Classifications
G; G10; G10D; G10D13/00; G10D13/01; G10D13/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
101 words
A METHOD OF FORMING A DRUM END COVER ASSEMBLY COMPRISING ARRANGING FIRST AND SECOND ANNULAR MEMBERS OF DIFFERENT DIMENSIONS ONE WITHIN THE OTHER TO DEFINE A SPACE THEREBETWEEN, POURING A SYNTHETIC RESIN MATERIAL INTO THE SPACE BETWEEN THE ANNULAR MEMBERS, STRETCHING A COVER MEMBER OF THE INNER ONE OF SAID FIRST AND SECOND ANNULAR MEMBERS AND DIRECTING ITS MARGINAL PERIPHERY INTO THE RESIN MATERIAL BEFORE IT IS SOLIDIFIED, SEWING THROUGH THE END FRAME MEMBERS, THE RESIN MATERIAL AND THE MARGINAL EDGE OF THE COVER MEMBER TO SECURE THE COVER MEMBER TO SAID END FRAME MEMBERS AND PERMITTING THE ASSEMBLY TO SOLIDIFY.
References Cited (Backward Citations)
US2934989A
Cited
US3285117A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-31 | 1972-07-01 | 1972-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-31 | 1976-07-01 | 1976-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-31 | 1980-07-01 | 1980-12-31 | $7700.00 | Window Closed / Lapsed |