Patent UST921013I4 successfully refreshed from Google Patents.
UST921013I4
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slide adapter
Assignee: —
•
Filing: 1972-01-31
•
Granted: 1974-04-16
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Expires: 1992-01-31
Abstract
Abstract A SLIDE ADAPTER FOR INTERCHANGEABLY RECEIVING RELATIVELY SMALL TRANSPARENCY MOUNTS AND ADAPTING THEM FOR USE IN A SLIDE PROJECTOR DESIGNED TO ACCOMMODATE LARGER TRANSPARENCY MOUNTS. THIS ADAPTER COMPRISES A WINDOWED FRAME MEMBER HAVING OVERALL DIMENSIONS COMPARABLE TO THE LARGER TRANSPARENCY MOUNTS AND HAVING A RECESS IN ONE FACE THEREOF INTO WHICH THE SMALLER TRANSPARENCY MOUNT CAN BE INSERTED FLATWISE. THE SMALLER TRANSPARENCY MOUNT IS HELD IN THIS RECESS BY A PLURALITY OF FLEXIBLE FINGERS THE FREE ENDS OF WHICH OVERHANG THE OUTER FACE OF THE RELATIVELY SMALL TRANSPARENCY MOUNT WHEN IT IS PROPERLY SEATED IN THE RECESS OF THE ADAPTER.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:23
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/54; G03B21/64
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-15 | 1977-10-15 | 1978-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-15 | 1981-10-15 | 1982-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-15 | 1985-10-15 | 1986-04-16 | $7700.00 | Window Closed / Lapsed |