US2688075A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sawtooth wave generator
Assignee: Allen B du Mont Laboratories Inc
•
Filing: 1949-10-15
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Granted: 1954-08-31
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Expires: 1969-10-15
Abstract
No abstract record available.
Inventors
- 👤 Richard C Palmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:07
CPC Classifications
H; H03; H03K; H03K4/00; H03K4/06; H03K4/08; H03K4/10; H03K4/12; H03K4/20; H03K4/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2139432A
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US2139467A
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US2341396A
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US2412542A
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US2479081A
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US2438907A
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US2411573A
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US2532534A
Cited
US2554172A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-30 | 1958-03-01 | 1958-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-30 | 1962-03-01 | 1962-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-30 | 1966-03-01 | 1966-08-31 | $7700.00 | Window Closed / Lapsed |