US3553914A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Support structure for a light dome
Assignee: Individual
•
Filing: 1968-11-14
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Granted: 1971-01-12
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Expires: 1988-11-14
Abstract
Abstract A SUPPORT STRUCTURE FOR A LIGHT DOME, COMPRISING AN UPPER SUPPORT SURFACE, WHICH FORMS A PORTION OF A CYLINDER SURFACE AND ON WHICH A TRANSPARENT PLATE MEMBER FORMING THE LIGHT DOME PROPER MAY BE CONNECTED BY MEANS OF A CONNECTING FRAME.
Inventors
- 👤 Hubertus Franciscus Van Boorn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:13
CPC Classifications
E; E04; E04D; E04D13/00; E04D13/03; E04D13/0305; E04D13/0315; E04D13/032
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) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |