Patent US2988097A successfully refreshed from Google Patents.
US2988097A
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Demand regulator
Assignee: Avox Systems Inc
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Filing: 1956-05-07
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Granted: 1961-06-13
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Expires: 1976-05-07
Abstract
No abstract record available.
Inventors
- 👤 Howard A Benzel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:07
CPC Classifications
A; A62; A62B; A62B9/00; A62B9/02; A62B9/022; A62B9/025; A61; A61M; A61M16/00; A61M16/20; A61M16/201; A61M16/207; Y; Y10; Y10S; Y10S137/00; Y10S137/908; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB493169A
Cited
DE757842C
Cited
US2385510A
Cited
GB590096A
Cited
US2581450A
Cited
US2728340A
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US2809662A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-12 | 1964-12-12 | 1965-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-12 | 1968-12-12 | 1969-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-12 | 1972-12-12 | 1973-06-13 | $7700.00 | Window Closed / Lapsed |