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19 . (1 indent ) Alarms and indicators
20 . (1 indent ) Combined mouth and ear pieces
21 . (1 indent ) Mouthpieces
101 GEOPHYSICAL OR SUBSURFACE EXPLORATION
102 . (1 indent ) Well logging
103 .. (2 indent ) Programmed or timer-controlled
104 .. (2 indent ) Directional source or detector
105 .. (2 indent ) Bore hole or casing condition
106 .. (2 indent ) Seismic wave generation
107 . (1 indent ) Programmed or timer-controlled
108 . (1 indent ) Seismic source and detector
109 .. (2 indent ) Aerial
110 .. (2 indent ) Underwater
111 .. (2 indent ) Plural sources
112 .. (2 indent ) Plural detectors
113 . (1 indent ) Seismic wave generation
114 .. (2 indent ) Vehicle-mounted
115 .. (2 indent ) Bubble suppression or control
116 .. (2 indent ) Explosive
118 .... (4 indent ) Underwater
119 .. (2 indent ) Fluid means
120 ... (3 indent ) Underwater
121 .. (2 indent ) Moving weight
122 . (1 indent ) Seismic wave detection
124 . (1 indent ) Altitude or depth detection
126 ANATOMIC OR PROSTHETIC RELATION
127 . (1 indent ) Dentiphone
128 . (1 indent ) Ear and mouth
130 .. (2 indent ) Auditory canal insert
131 ... (3 indent ) Stethoscope
132 ... (3 indent ) With diaphragm
133 ... (3 indent ) Deflector type
134 ... (3 indent ) Eardrum
135 ... (3 indent ) Ear insert
136 .. (2 indent ) Deflector type
137 .. (2 indent ) Receiver
139 WAVE GENERATION AND DETECTION
143 MOVING SOUND PRODUCER OR DEFLECTOR
144 PLURAL DIAPHRAGM SOUND SOURCES
145 . (1 indent ) Plural chambers
146 . (1 indent ) With sound-asborbing means
147 . (1 indent ) Three diaphragms
148 DIAPHRAGM AND ENCLOSURE
149 . (1 indent ) Moisture proof
150 . (1 indent ) Recessed (e.g., wall-mounted, etc.)
151 . (1 indent ) With sound-absorbing means
152 . (1 indent ) With horn
153 . (1 indent ) Rounded enclosure (e.g., curved, etc.)
154 . (1 indent ) Inclined diaphragm
155 . (1 indent ) Reflector baffle
156 . (1 indent ) Reflex baffle
158 . (1 indent ) Microphone type
159 . (1 indent ) With horn
160 . (1 indent ) With resonant chamber
161 . (1 indent ) With direct mechanical connection to drive unit
162 .. (2 indent ) Stylus bar
163 . (1 indent ) Plural dependent diaphragms
164 . (1 indent ) Sectional diaphragm
165 .. (2 indent ) Concentric annular section
166 . (1 indent ) With damping means
167 . (1 indent ) Critically defined material or coating
168 .. (2 indent ) Metallic material
169 .. (2 indent ) Fibrous material
170 .. (2 indent ) Laminated type
171 . (1 indent ) Mounting or suspension means
172 .. (2 indent ) Elastic suspension means
173 . (1 indent ) Particular shape
174 .. (2 indent ) Variable thickness
175 SOUND-MODIFYING MEANS
177 . (1 indent ) Intensifying horn
178 .. (2 indent ) Collapsible
179 .. (2 indent ) With particular mounting structure
180 .. (2 indent ) Material
181 .. (2 indent ) With vibratory filaments
182 .. (2 indent ) With resonant chamber
183 ... (3 indent ) Double wall
184 .. (2 indent ) Having apertures in walls
185 .. (2 indent ) With sound-path restriction
186 ... (3 indent ) Adjustable
187 .. (2 indent ) Plural intensifying portions
188 ... (3 indent ) Similar portions
189 .. (2 indent ) Multisection housing
190 ... (3 indent ) Separable
191 .. (2 indent ) With external sound deflector
192 .. (2 indent ) Particular shape of the horn
193 ... (3 indent ) Spiral sound path
194 ... (3 indent ) Doubly folded sound path
195 ... (3 indent ) Wide angle annular outlet
196 . (1 indent ) Within tubular means
197 .. (2 indent ) Adjustable
198 . (1 indent ) Housing or enclosure (e.g., sound confining and absorbing)
199 .. (2 indent ) Speaker type
200 .. (2 indent ) Machine type enclosure
201 ... (3 indent ) Offfice type devices (e.g., typewriters, teleprinters, etc.)
202 ... (3 indent ) Electical type devices (e.g., transformers, motors, etc.)
203 ... (3 indent ) Reaction engine test chamber
204 ... (3 indent ) Internal-combustion engine
205 ... (3 indent ) Partial enclosure or shroud
206 . (1 indent ) By wave interference
207 . (1 indent ) Mechanical vibration attenuator
208 .. (2 indent ) Damping of flexural structure
209 .. (2 indent ) Relatively moving parts
210 . (1 indent ) Sound absorbing fence or screen (e.g., jet engine or vehicle noise)
211 . (1 indent ) Combined
212 . (1 indent ) Muffler, fluid conducting type
213 .. (2 indent ) Reaction engine type
214 ... (3 indent ) Upstream (e.g., intake silencer)
215 ... (3 indent ) With adjustable outlet nozzle
216 .... (4 indent ) Longitudinally adjustable section
217 ... (3 indent ) Removable silencer unit (e.g., mobile)
218 ... (3 indent ) Ground installation silencer
219 ... (3 indent ) With adjustable internal baffles
220 ... (3 indent ) With disparate fluid mingling
221 .... (4 indent ) Liquid
222 ... (3 indent ) With sound absorbing material
223 .. (2 indent ) Silencer for firearms
224 .. (2 indent ) Sound absorbing ventilating duct or curb (e.g., a/c, heat, air flow type)
225 .. (2 indent ) With fan to assist fluid flow
226 .. (2 indent ) With adjustable fluid flow
227 .. (2 indent ) Pipe-muffler (e.g., tail pipe type)
228 .. (2 indent ) With exhaust pipe
229 .. (2 indent ) Carburetor, burner, or compressor intake silencer
230 .. (2 indent ) Pneumatic type motor (e.g., air hammer, etc.)
231 .. (2 indent ) With solid particle separator (e.g., spark arrestor, vacuum cleaner, etc.)
232 .. (2 indent ) Separate distinct units serially connected
233 .. (2 indent ) Liquid motion silencer
234 ... (3 indent ) Water-closet type
235 .. (2 indent ) Underwater discharge
236 .. (2 indent ) With muffler cut-out
237 .. (2 indent ) With pressure relief safety valve
238 .. (2 indent ) Multiple distinct inlets and/or outlets
239 ... (3 indent ) Outlets
240 .. (2 indent ) Manifold type
241 .. (2 indent ) Adjustable muffler (i.e., internal or external parts)
242 .. (2 indent ) Mouthpiece (e.g., telephone, microphone, etc.)
243 .. (2 indent ) With repair, replacement, or quick disassembly
244 .. (2 indent ) Corrosion prevention
245 ... (3 indent ) Internally coated parts
246 ... (3 indent ) Nonmetallic
247 .. (2 indent ) Straight-through passage
248 ... (3 indent ) Continuous conduit
249 .... (4 indent ) With expansion chamber
250 .... • (5 indent ) And side branch
251 .... • (5 indent ) And multi-passage
252 ... (3 indent ) With sound absorbing material
253 ... (3 indent ) With muffler bypass
254 .... (4 indent ) Valve controlled
255 ... (3 indent ) Expansion chamber
256 .. (2 indent ) With sound absorbing material
257 ... (3 indent ) And multi-passage
258 ... (3 indent ) Pervious material interposed in flow path
259 .. (2 indent ) With disparate fluid mingling
260 ... (3 indent ) Liquid
261 .... (4 indent ) Sprayed
262 ... (3 indent ) Induced by suction
263 .... (4 indent ) Motion induced
264 .. (2 indent ) With baffle or baffle structure
265 ... (3 indent ) Retroverted
266 .... (4 indent ) And side branch chamber
267 ... (3 indent ) Coaxial foraminous walls
268 ... (3 indent ) Multi-passage
269 ... (3 indent ) Expansion chamber type
270 .... (4 indent ) With alternating partial baffles along the length of casing
271 .... (4 indent ) With adjustable or flexible wall
272 .... (4 indent ) Plural chambers
273 .... (4 indent ) And side branch chamber
274 .... (4 indent ) With centrifugal flow
275 .... (4 indent ) And multi-passage
276 ... (3 indent ) Side branch
277 ... (3 indent ) Movable baffle
278 .... (4 indent ) Biased
279 ... (3 indent ) Spiral
280 .... (4 indent ) Helical
281 ... (3 indent ) Perpendicular and/or oblique
282 ... (3 indent ) Casings
283 .... (4 indent ) Air or liquid cooled
284 . (1 indent ) Sound absorbing panels
285 .. (2 indent ) Load bearing block type structure
286 .. (2 indent ) Specific acoustical properties or dimensions
287 .. (2 indent ) Movable/foldable panels
288 .. (2 indent ) Cellular
289 .. (2 indent ) Light permeable
290 .. (2 indent ) Multilayer panel or wall structure
291 ... (3 indent ) With membrane outer layer
292 ... (3 indent ) With perforated or porous face and honeycomb-like core
293 .. (2 indent ) With channels or cavities in surface layer
294 .. (2 indent ) Materials
295 . (1 indent ) Space absorbers
296 . (1 indent ) Methods
403 REFRIGERATOR COMPRESSSOR MUFFLER
404 HOBBY CRAFT ENGINE MUFFLER
FOR000 CLASS-RELATED FOREIGN DOCUMENTS
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