US3362275A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drumhead construction
Assignee: Individual
•
Filing: 1966-05-09
•
Granted: 1968-01-09
•
Expires: 1986-05-09
Abstract
No abstract record available.
Inventors
- 👤 Koishikawa Yoshiyuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:50
CPC Classifications
G; G10; G10D; G10D13/00; G10D13/10; G10D13/20; G10D13/01; G10D13/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US614694A
Cited
US794658A
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US889762A
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US1443191A
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US1980876A
Cited
CH298533A
Cited
US2779227A
Cited
FR1218544A
Cited
FR1262621A
Cited
US2979981A
Cited
GB949429A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-08 | 1971-07-10 | 1972-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-08 | 1975-07-10 | 1976-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-08 | 1979-07-10 | 1980-01-09 | $7700.00 | Window Closed / Lapsed |