Patent US1520575A successfully refreshed from Google Patents.
Patent US3238995A successfully refreshed from Google Patents.
US3238995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Building structure
Assignee: Individual
•
Filing: 1963-12-13
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Granted: 1966-03-08
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Expires: 1983-12-13
Abstract
No abstract record available.
Inventors
- 👤 Gordon R Bonzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:59
CPC Classifications
E; E05; E05F; E05F15/00; E05F15/50; E05F15/53
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
176 words
IN A DOOR STRUCTURE, A SUPPORTING MEANS, A PLURALITY OF MOVABLE DOORS HINGEDLY SECURED TO SAID SUPPORTING MEANS, SAID MOVABLE DOORS EACH HAVING AN UPPER DOOR MEMBER, AN INTERMEDIATE DOOR MEMBER SLIDABLY EMBRACED WITHIN SAID UPPER DOOR MEMBER AND A LOWER DOOR MEMBER SLIDABLY EMBRACED WITHIN SAID INTERMEDIATE DOOR MEMBER, SAID UPPER DOOR MEMBER COMPRISED OF A PAIR OF VERTICALLY DISPOSED FLAT MEMBERS, SAID INTERMEDIATE DOOR PORTION COMPRISED OF A PAIR OF VERTICALLY DISPOSED FLAT MEMBERS, SAID LOWER DOOR MEMBER COMPRISED OF AT LEAST ONE FLAT MEMBER, A FIRST HYDRAULIC CYLINDER DISPOSED WITHIN SAID UPPER AN INTERMEDIATE DOOR PORTIONS, SAID FIRST TELESCOPIC HYDRAULIC CYLINDER BEING SECURED AT ITS UPPER END TO SAID UPPER DOOR, SAID FIRST HYDRAULIC CYLINDER BEING SECURED AT ITS LOWER END TO THE UPPER PORTION OF SAID LOWER DOOR MEMBER, A SECOND HYDRAULIC CYLINDER BEING PIVOTALLY SECURED AT ONE END TO THE INSIDE SURFACE OF SAID UPPER DOOR MEMBER, SAID SECOND HYDRAULIC CYLINDER BEING PIVOTALLY SECURED AT ITS OTHER END TO SAID SUPPORTING MEANS, AND A MEANS FOR NORMALLY OPERATING SAID HYDRAULIC CLYINDERS.
Claim 2
Dependent Claim
176 words
IN A DOOR STRUCTURE, A SUPPORTING MEANS, A PLURALITY OF MOVABLE DOORS HINGEDLY SECURED TO SAID SUPPORTING MEANS, SAID MOVABLE DOORS EACH HAVING AN UPPER DOOR MEMBER, AN INTERMEDIATE DOOR MEMBER SLIDABLY EMBRACED WITHIN SAID UPPER DOOR MEMBER AND A LOWER DOOR MEMBER SLIDABLY EMBRACED WITHIN SAID INTERMEDIATE DOOR MEMBER, SAID UPPER DOOR MEMBER COMPRISED OF A PAIR OF VERTICALLY DISPOSED FLAT MEMBERS, SAID INTERMEDIATE DOOR PORTION COMPRISED OF A PAIR OF VERTICALLY DISPOSED FLAT MEMBERS, SAID LOWER DOOR MEMBER COMPRISED OF AT LEAST ONE FLAT MEMBER, A FIRST HYDRAULIC CYLINDER DISPOSED WITHIN SAID UPPER AN INTERMEDIATE DOOR PORTIONS, SAID FIRST TELESCOPIC HYDRAULIC CYLINDER BEING SECURED AT ITS UPPER END TO SAID UPPER DOOR, SAID FIRST HYDRAULIC CYLINDER BEING SECURED AT ITS LOWER END TO THE UPPER PORTION OF SAID LOWER DOOR MEMBER, A SECOND HYDRAULIC CYLINDER BEING PIVOTALLY SECURED AT ONE END TO THE INSIDE SURFACE OF SAID UPPER DOOR MEMBER, SAID SECOND HYDRAULIC CYLINDER BEING PIVOTALLY SECURED AT ITS OTHER END TO SAID SUPPORTING MEANS, AND A MEANS FOR NORMALLY OPERATING SAID HYDRAULIC CLYINDERS.
References Cited (Backward Citations)
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US2057850A
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US2202943A
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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) | 1969-03-07 | 1969-09-06 | 1970-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-07 | 1973-09-06 | 1974-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-07 | 1977-09-06 | 1978-03-08 | $7700.00 | Window Closed / Lapsed |