Patent US3509629A successfully refreshed from Google Patents.
US3509629A
Expired / Lapsed
US
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Portable and adjustable contra-angle dental instrument
Assignee: Mitsubishi Electric Corp
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Filing: 1967-09-27
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Granted: 1970-05-05
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Expires: 1987-09-27
Abstract
No abstract record available.
Inventors
- 👤 Masanao Kidokoro
- 👤 Mikio Ogawa
- 👤 Motoi Morimoto
- 👤 Hisao Takei
- 👤 Noboru Ogawa
- 👤 Koji Fukuda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:24
CPC Classifications
A; A61; A61C; A61C1/00; A61C1/02; A61C1/06; A61C2204/00; A61C2204/002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE549080C
Cited
US2471526A
Cited
US2623962A
Cited
US3011287A
Cited
US3109238A
Cited
US3183538A
Cited
US3210847A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-04 | 1973-11-03 | 1974-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-04 | 1977-11-03 | 1978-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-04 | 1981-11-03 | 1982-05-05 | $7700.00 | Window Closed / Lapsed |