Patent US3337914A successfully refreshed from Google Patents.
Patent US3491295A successfully refreshed from Google Patents.
US3491295A
Expired / Lapsed
US
⏱️ 0.0 years remaining
R.m.s. instrument having voltage controlled oscillator in feed-back loop
Assignee: Fluke Corp
•
Filing: 1966-11-21
•
Granted: 1970-01-20
•
Expires: 1986-11-21
Abstract
No abstract record available.
Inventors
- 👤 Richard W Van Saun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:40
CPC Classifications
H; H03; H03M; H03M1/00; G; G01; G01R; G01R19/00; G01R19/02; G01R19/03; G01R19/25; G01R19/252; H03M1/06; H03M1/08
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1121835A
Cited
US3378786A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-19 | 1973-07-21 | 1974-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-19 | 1977-07-21 | 1978-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-19 | 1981-07-21 | 1982-01-20 | $7700.00 | Window Closed / Lapsed |