Patent US3237591A successfully refreshed from Google Patents.
US3237591A
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Assignee: HP Inc
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Filing: 1963-03-01
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Granted: 1966-03-01
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Expires: 1983-03-01
Abstract
No abstract record available.
Inventors
- 👤 Theodore G Pichel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:37
CPC Classifications
H; H01; H01H; H01H13/00; H01H13/02; H01H13/023; F; F21; F21K; F21K2/00; F23; F23D; F23D14/00; F23D14/30; H01H9/00; H01H9/16; Y; Y10; Y10S; Y10S116/00; Y10S116/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A PUSHBOTTOM COMPRISING: AN OUTER CASING HAVING AN APERTURE AT ONE END THEREOF, AN INDICATING PLATE FIXEDLY MOUNTED AT SAID APERTURE AND HAVING A TRANSLUCENT INDICIUM, A SUPPORTING PLATE SLIDABLY MOUNTED WITHIN SAID OUTER CASING AND SUPPORTING A LAYER OF VISUALLY CONTRASTING MATERIAL, PIN-LIKE MEANS CONNECTED TO SAID SUPPORTING PLATE TO MOVE SAID SUPPORTING PLATE WITH RESPECT TO SAID OUTER CASING WHEREBY SAID LAYER OF VISUALLY CONTRASTING MATERIAL MOVES TOWARD THE TRANSLUCENT INDICIUM OF SAID INDICATING PLATE, AND A FIRST RESILIENT ELEMENT FOR RETRACTING SAID SUPPORTING PLATE AWAY FROM SAID INDICATING PLATE.
Claim 2
Dependent Claim
92 words
A PUSHBOTTOM COMPRISING: AN OUTER CASING HAVING AN APERTURE AT ONE END THEREOF, AN INDICATING PLATE FIXEDLY MOUNTED AT SAID APERTURE AND HAVING A TRANSLUCENT INDICIUM, A SUPPORTING PLATE SLIDABLY MOUNTED WITHIN SAID OUTER CASING AND SUPPORTING A LAYER OF VISUALLY CONTRASTING MATERIAL, PIN-LIKE MEANS CONNECTED TO SAID SUPPORTING PLATE TO MOVE SAID SUPPORTING PLATE WITH RESPECT TO SAID OUTER CASING WHEREBY SAID LAYER OF VISUALLY CONTRASTING MATERIAL MOVES TOWARD THE TRANSLUCENT INDICIUM OF SAID INDICATING PLATE, AND A FIRST RESILIENT ELEMENT FOR RETRACTING SAID SUPPORTING PLATE AWAY FROM SAID INDICATING PLATE.
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) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |