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Patent US3526035A successfully refreshed from Google Patents.
US3526035A
Expired / Lapsed
US
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Orthodontic headgear
Assignee: 3M Unitek Corp
•
Filing: 1969-08-12
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Granted: 1970-09-01
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Expires: 1989-08-12
Abstract
No abstract record available.
Inventors
- 👤 Maclay M Armstrong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:15
CPC Classifications
A; A61; A61C; A61C7/00; A61C7/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2874468A
Cited
US3203099A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-31 | 1974-03-02 | 1974-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-31 | 1978-03-02 | 1978-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-31 | 1982-03-02 | 1982-09-01 | $7700.00 | Window Closed / Lapsed |