US3409348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Student lens assembly
Assignee: American Science and Engineering Inc
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Filing: 1965-12-06
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Granted: 1968-11-05
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Expires: 1985-12-06
Abstract
No abstract record available.
Inventors
- 👤 Annis Martin
- 👤 Joseph P Pennimpede
- 👤 Martin Raymond St
- 👤 Jr Edwin C Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:49
CPC Classifications
G; G09; G09B; G09B23/00; G09B23/06; G09B23/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
AN OPTICAL ASSEMBLY COMPRISED OF TWO OPTICAL IMPLEMENTS, EACH EMBODYING A HOLDER MOUNTING TWO LENSES OF DIFFERENT MAGNIFYING POWER IN SPACED RELATION, AND MEANS ON THE HOLDERS OF THE IMPLEMENTS INTERENGAGEABLY OPERABLE TO HOLD THE IMPLEMENTS, WHEN SUPERPOSED, WITH THE OPTICAL CENTERS OF THE LENSES COINCIDING WHEREIN EACH HOLDER HAS A HANDLE AND A PLURALITY OF TRANSVERSELY SPACED, LONGITUDINALLY EXTENDING RIBS AND GROOVES ON THE OPPOSITE FACES OF SAID HANDLES, INTERENGAGEMENT OF WHICH POSITIONS THE IMPLEMENTS IN SUCH TRANSVERSE RELATION THAT THE CENTERS OF THE LENSES COINCIDE.
Claim 2
Dependent Claim
87 words
AN OPTICAL ASSEMBLY COMPRISED OF TWO OPTICAL IMPLEMENTS, EACH EMBODYING A HOLDER MOUNTING TWO LENSES OF DIFFERENT MAGNIFYING POWER IN SPACED RELATION, AND MEANS ON THE HOLDERS OF THE IMPLEMENTS INTERENGAGEABLY OPERABLE TO HOLD THE IMPLEMENTS, WHEN SUPERPOSED, WITH THE OPTICAL CENTERS OF THE LENSES COINCIDING WHEREIN EACH HOLDER HAS A HANDLE AND A PLURALITY OF TRANSVERSELY SPACED, LONGITUDINALLY EXTENDING RIBS AND GROOVES ON THE OPPOSITE FACES OF SAID HANDLES, INTERENGAGEMENT OF WHICH POSITIONS THE IMPLEMENTS IN SUCH TRANSVERSE RELATION THAT THE CENTERS OF THE LENSES COINCIDE.
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) | 1971-11-05 | 1972-05-06 | 1972-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-05 | 1976-05-06 | 1976-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-05 | 1980-05-06 | 1980-11-05 | $7700.00 | Window Closed / Lapsed |