Patent US2786926A successfully refreshed from Google Patents.
US2786926A
Expired / Lapsed
US
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Protective arrangements for heating apparatus
Assignee: Radio Receptor Co Inc
•
Filing: 1953-05-27
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Granted: 1957-03-26
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Expires: 1973-05-27
Abstract
No abstract record available.
Inventors
- 👤 Rothstein Milton
- 👤 Arthur L Rossoff
- 👤 Levy Lester
- 👤 Peter H Dirnbach
- 👤 Witt David De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:13
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/20; G05D23/24; G05D23/2451; G05D23/2453
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2504754A
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US2548246A
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US2640908A
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US2529560A
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US2458563A
Cited
US2610289A
Cited
US2707742A
Cited
US2638529A
Cited
US2763758A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-25 | 1960-09-24 | 1961-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-25 | 1964-09-24 | 1965-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-25 | 1968-09-24 | 1969-03-26 | $7700.00 | Window Closed / Lapsed |