Patent US3330152A successfully refreshed from Google Patents.
US3330152A
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Constant force aplanation tonography
Assignee: Biotronics Inc
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Filing: 1964-11-16
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Granted: 1967-07-11
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Expires: 1984-11-16
Abstract
No abstract record available.
Inventors
- 👤 Ralph S Mackay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:30
CPC Classifications
A; A61; A61B; A61B3/00; A61B3/10; A61B3/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
A TONOPGRAPHY METHOD COMPRISING APPLYING A CONSTANT FORCE TO AN EYEBALL FOR AN EXTENDED PERIOD OF TIME WHILE MEASURING THE CHANGE IN INTRAOCULAR PRESSURE WITHIN THE EYEBALL WITH RESPECT TO TIME DURING SAID APPLICATION OF CONSTANT FORCE.
Claim 2
Dependent Claim
37 words
A TONOPGRAPHY METHOD COMPRISING APPLYING A CONSTANT FORCE TO AN EYEBALL FOR AN EXTENDED PERIOD OF TIME WHILE MEASURING THE CHANGE IN INTRAOCULAR PRESSURE WITHIN THE EYEBALL WITH RESPECT TO TIME DURING SAID APPLICATION OF CONSTANT FORCE.
References Cited (Backward Citations)
FR858663A
Cited
US2366645A
Cited
US3070997A
Cited
US3049001A
Cited
US3150520A
Cited
US3184960A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-10 | 1971-01-09 | 1971-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-10 | 1975-01-09 | 1975-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-10 | 1979-01-09 | 1979-07-11 | $7700.00 | Window Closed / Lapsed |