US3284902A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Orthodontic expander
Assignee: ORTHODONTISTS RES AND Mfg CORP
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Filing: 1963-09-30
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Granted: 1966-11-15
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Expires: 1983-09-30
Abstract
No abstract record available.
Inventors
- 👤 Raymond E Dillberg
- 👤 Frank R Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:38
CPC Classifications
A; A61; A61C; A61C7/00; A61C7/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-14 | 1970-05-16 | 1970-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-14 | 1974-05-16 | 1974-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-14 | 1978-05-16 | 1978-11-15 | $7700.00 | Window Closed / Lapsed |