FR43130E - Rational resonator - Google Patents
Rational resonatorInfo
- Publication number
- FR43130E FR43130E FR43130DA FR43130E FR 43130 E FR43130 E FR 43130E FR 43130D A FR43130D A FR 43130DA FR 43130 E FR43130 E FR 43130E
- Authority
- FR
- France
- Prior art keywords
- resonator
- rational
- rational resonator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/08—Non-electric sound-amplifying devices, e.g. non-electric megaphones
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR43130T | 1933-02-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR43130E true FR43130E (en) | 1934-02-12 |
Family
ID=8679131
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR43130D Expired FR43130E (en) | 1933-02-28 | 1933-02-28 | Rational resonator |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR43130E (en) |
-
1933
- 1933-02-28 FR FR43130D patent/FR43130E/en not_active Expired
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