US3514153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental chair control
Assignee: Weber Dental Manufacturing Co
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Filing: 1968-06-03
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Granted: 1970-05-26
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Expires: 1988-06-03
Abstract
No abstract record available.
Inventors
- 👤 John A Maurer
- 👤 Victor R Ferguson
- 👤 Wilbur L Espenschied
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:03
CPC Classifications
A; A61; A61G; A61G15/00; A61G15/02; A47; A47C; A47C3/00; A47C3/20; A47C3/30
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) | 1973-05-25 | 1973-11-24 | 1974-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-25 | 1977-11-24 | 1978-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-25 | 1981-11-24 | 1982-05-26 | $7700.00 | Window Closed / Lapsed |