Patent US3330583A successfully refreshed from Google Patents.
US3330583A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety latch
Assignee: AT&T Inc
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Filing: 1964-05-14
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Granted: 1967-07-11
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Expires: 1984-05-14
Abstract
No abstract record available.
Inventors
- 👤 Rudolph S Kennedy
- 👤 David W Mathison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:14
CPC Classifications
E; E04; E04G; E04G7/00; E04G7/02; E04G7/26; E04G7/30; E04G7/302; E04G7/303; E04G7/305; Y; Y10; Y10T; Y10T403/00; Y10T403/59; Y10T403/599
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
IN COMBINATION: A MOUNTING RACK INCLUDING A SERIES OF T-SHAPED SLOTS, AND A LATCHING DEVICE COMPRISING A BODY INCLUDING A T-SHAPED HEAD FOR LATCHING ENGAGEMENT WITH A RESPECTIVE SAID SLOT, A LOCKING BOLT WITH AN EXPOSED END COMPRISING A LOCKING SEAT HAVING AN UPRIGHT POSITION FOR LOCKING ENGAGEMENT WITH SAID SLOT, MEANS FOR ROTATABLY AND SLIDABLY MOUNTING SAID BOLT IN SAID BODY AND FOR URGING SAME INTO AN EXTENDED POSITION, AND MEANS RESPONSIVE TO PLACEMENT OF SAID BOLT INTO SAID EXTENDED POSITION FOR ROTATING SAID LOCKING SEAT INTO SAID UPRIGHT POSITION.
Claim 2
Dependent Claim
91 words
IN COMBINATION: A MOUNTING RACK INCLUDING A SERIES OF T-SHAPED SLOTS, AND A LATCHING DEVICE COMPRISING A BODY INCLUDING A T-SHAPED HEAD FOR LATCHING ENGAGEMENT WITH A RESPECTIVE SAID SLOT, A LOCKING BOLT WITH AN EXPOSED END COMPRISING A LOCKING SEAT HAVING AN UPRIGHT POSITION FOR LOCKING ENGAGEMENT WITH SAID SLOT, MEANS FOR ROTATABLY AND SLIDABLY MOUNTING SAID BOLT IN SAID BODY AND FOR URGING SAME INTO AN EXTENDED POSITION, AND MEANS RESPONSIVE TO PLACEMENT OF SAID BOLT INTO SAID EXTENDED POSITION FOR ROTATING SAID LOCKING SEAT INTO SAID UPRIGHT POSITION.
References Cited (Backward Citations)
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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 |