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A sealed crustless sandwich for providing a convenient sandwich without an outer crust which can be stored for long periods of time without a central filling from leaking outwardly.
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| Number | Title | Issue Date |
| 4061190 | In-situ laser retorting of oil shale Oil shale formations are retorted in-situ and gaseous hydrocarbon products recovered by drilling two or more wells into an oil shale formation underneath the surface of the ground; fracturing a region of said oil shale formation by directing a high energy... | 12/06/1977 |
| 4061146 | Tissue macerating instrument There is disclosed a surgical tissue macerating and removal tool having a rotating rod with a cutting member at one end and disposed in a tube which itself is disposed coaxially in an extension of the tool handle. A frusto-conical member extends into the ... | 12/06/1977 |
| 4033316 | Sustained arc ignition system Circuitry for maintaining an arc or spark across a spark gap for a desired length of time is disclosed. A high-voltage, direct-current (dc) source is connected in series with a secondary winding of a high voltage, step-up transformer or coil and a spark g... | 07/05/1977 |
| 4029838 | Hybrid composite laminate structures The invention relates to laminate structures and specifically to essentially anisotropic fiber composite laminates wherein metal foils are selectively disposed within the laminate to produce increased resistance to high velocity impact, fracture, surface ... | 06/14/1977 |
