Patent US2799787A successfully refreshed from Google Patents.
US2799787A
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Ultrasonic transmitter apparatus
Assignee: Siemens Reiniger Werke AG
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Filing: 1953-07-07
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Granted: 1957-07-16
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Expires: 1973-07-07
Abstract
No abstract record available.
Inventors
- 👤 Guttner Werner
- 👤 Bastir Robert
- 👤 Pickel Gunter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:08
CPC Classifications
B; B06; B06B; B06B1/00; B06B1/02; B06B1/0207; B06B1/0223; B06B1/0238; B06B1/0246; B06B1/0253; B06B2201/00; B06B2201/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1734975A
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US2055090A
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US2320876A
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US2372956A
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US2609510A
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US2594841A
Cited
US2444349A
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US2647983A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-15 | 1961-01-14 | 1961-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-15 | 1965-01-14 | 1965-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-15 | 1969-01-14 | 1969-07-16 | $7700.00 | Window Closed / Lapsed |