Patent US3097443A successfully refreshed from Google Patents.
US3097443A
Expired / Lapsed
US
⏱️ 0.0 years remaining
M kellner
Assignee: —
•
Filing: —
•
Granted: 1963-07-16
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Expires: 1980-07-16
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:26
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/54; G03B21/64
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A SLIDE FRAME COMPRISING A PAIR OF COEXTENSIVE AND HINGEDLY INTERCONNECTED FRAME MEMBERS WITH ALIGNED OPENINGS AND WITH MATING EDGE PORTIONS DEFINING A PERIPHERALLY CLOSED CASING IN AN ENGAGED POSITION OF SAID MEMBERS; A PAIR OF SUBSTANTIALLY COEXTENSIVE TRANSPARENT PLATES WITHIN SAID CASING RESPECTIVELY SPANNING SAID OPENINGS; A FIRST SET OF RETAINING ELEMENTS ON ONE OF SAID MEMBERS OVERLYING OPPOSITE MARGINAL ZONES OF ONE OF SAID PLATES FOR HOLDING IT IN PLACE AND SO DISPOSED AS TO COME TO REST AGAINST THE OTHER OF SAID PLATES IN THE ENGAGED POSITION OF SAID MEMBERS; AND A SECOND SET OF RETAINING ELEMENTS OFFSET FROM SAID FIRST RETAINING ELEMENTS ON THE OTHER OF SAID MEMBERS OVERLYING OPPOSITE MARGINAL ZONES OF SAID
Claim 2
Dependent Claim
118 words
A SLIDE FRAME COMPRISING A PAIR OF COEXTENSIVE AND HINGEDLY INTERCONNECTED FRAME MEMBERS WITH ALIGNED OPENINGS AND WITH MATING EDGE PORTIONS DEFINING A PERIPHERALLY CLOSED CASING IN AN ENGAGED POSITION OF SAID MEMBERS; A PAIR OF SUBSTANTIALLY COEXTENSIVE TRANSPARENT PLATES WITHIN SAID CASING RESPECTIVELY SPANNING SAID OPENINGS; A FIRST SET OF RETAINING ELEMENTS ON ONE OF SAID MEMBERS OVERLYING OPPOSITE MARGINAL ZONES OF ONE OF SAID PLATES FOR HOLDING IT IN PLACE AND SO DISPOSED AS TO COME TO REST AGAINST THE OTHER OF SAID PLATES IN THE ENGAGED POSITION OF SAID MEMBERS; AND A SECOND SET OF RETAINING ELEMENTS OFFSET FROM SAID FIRST RETAINING ELEMENTS ON THE OTHER OF SAID MEMBERS OVERLYING OPPOSITE MARGINAL ZONES OF SAID
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) | 1966-07-15 | 1967-01-14 | 1967-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-15 | 1971-01-14 | 1971-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-15 | 1975-01-14 | 1975-07-16 | $7700.00 | Window Closed / Lapsed |