Patent US2203104A successfully refreshed from Google Patents.
Patent US4438580A successfully refreshed from Google Patents.
US4438580A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stacking type movable large display device
Assignee: Mitsubishi Electric Corp
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Filing: 1982-07-19
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Granted: 1984-03-27
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Expires: 2002-07-19
Abstract
Abstract A large scale display device is made up of a plurality of stackable display blocks which are assembled on location. The lowermost block is secured to a trailer having supporting outriggers.
Inventors
- 👤 Masamura Yamaji
- 👤 Shozo Fujita
- 👤 Shunichi Futatsuishi
- 👤 Takashi Takushima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:00
CPC Classifications
G; G09; G09F; G09F21/00; G09F21/04; G09F21/048
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
96 words
A display device, comprising: a plurality of movable display blocks each having a display area segment with said plurality of display blocks being stackable one onto another such that together, said display area segments of said plurality of display blocks form a predetermined display area surface, a lowermost one of said display blocks being secured to a trailer having supporting outriggers, remaining ones of said display blocks being detachably secured to respective trailers, means for detachably securing said display blocks to each other when said display blocks are assembled to form said predetermined display area surface.
Claim 2
Dependent Claim
96 words
A display device, comprising: a plurality of movable display blocks each having a display area segment with said plurality of display blocks being stackable one onto another such that together, said display area segments of said plurality of display blocks form a predetermined display area surface, a lowermost one of said display blocks being secured to a trailer having supporting outriggers, remaining ones of said display blocks being detachably secured to respective trailers, means for detachably securing said display blocks to each other when said display blocks are assembled to form said predetermined display area surface.
Claim 3
Dependent Claim
12 words
A device as claimed in claim 1, said display blocks being waterproof.
Claim 4
Dependent Claim
30 words
A device as claimed in claim 1, further comprising means for electronically linking said display blocks together when said display blocks are assembled to form said predetermined display area surface.
Claim 5
Dependent Claim
58 words
A device as claimed in claim 1, wherein each of said display blocks has a rectilinear shape and has a length and width sized such that said remaining ones of said display blocks can be stacked on said lowermost one of said display blocks without the need of frames to support said remaining ones of said display blocks.
Claim 6
Dependent Claim
22 words
A device as claimed in claim 1, wherein said predetermined surface area is at least 5 m high and 8 m wide.
References Cited (Backward Citations)
US3475045A
Cited
US4035940A
Cited
US4043056A
Cited
US4136480A
Cited
US4110792A
Cited
FR2447741A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-03-27 | 1987-09-26 | 1988-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-27 | 1991-09-26 | 1992-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-27 | 1995-09-26 | 1996-03-27 | $7700.00 | Window Closed / Lapsed |