US3501745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency selective resonant reed detector
Assignee: Bogen Corp
•
Filing: 1965-07-15
•
Granted: 1970-03-17
•
Expires: 1985-07-15
Abstract
No abstract record available.
Inventors
- 👤 John B Beckman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:22
CPC Classifications
H; H01; H01H; H01H51/00; H01H51/30; H01H51/32
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1872257A
Cited
US2122921A
Cited
US2161411A
Cited
US2195417A
Cited
US2845607A
Cited
US2983902A
Cited
US2861256A
Cited
US3109165A
Cited
US3232119A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-16 | 1973-09-15 | 1974-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-16 | 1977-09-15 | 1978-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-16 | 1981-09-15 | 1982-03-17 | $7700.00 | Window Closed / Lapsed |