Patent US2928052A successfully refreshed from Google Patents.
US2928052A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transducer power supply for oscillators
Assignee: Bosch Security Systems Inc
•
Filing: 1955-08-31
•
Granted: 1960-03-08
•
Expires: 1975-08-31
Abstract
No abstract record available.
Inventors
- 👤 John F Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:17
CPC Classifications
H; H02; H02N; H02N2/00; H02N2/18; H02N2/186; F; F23; F23Q; F23Q2/00; F23Q2/28; F23Q2/285; F23Q2/287; F23Q3/00; F23Q3/002
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2185966A
Cited
US2249305A
Cited
US2300638A
Cited
US2309703A
Cited
US2364681A
Cited
US2547027A
Cited
US2523769A
Cited
US2558991A
Cited
US2628338A
Cited
US2676273A
Cited
US2851592A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-08 | 1963-09-07 | 1964-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-08 | 1967-09-07 | 1968-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-08 | 1971-09-07 | 1972-03-08 | $7700.00 | Window Closed / Lapsed |