Patent US3435283A successfully refreshed from Google Patents.
US3435283A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermosyphonic heat exchange device for stabilizing the frequency of cavity resonators
Assignee: Compagnie Francaise Thomson Houston SA
•
Filing: 1966-04-28
•
Granted: 1969-03-25
•
Expires: 1986-04-28
Abstract
No abstract record available.
Inventors
- 👤 Charles A Beurtheret
- 👤 Jacques G Boissiere
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:03
CPC Classifications
H; H01; H01J; H01J25/00; H01J25/02; H01J25/22; H01J19/00; H01J19/28; H01J19/32; H01J19/36; H01J23/00; H01J23/16; H01J23/18; H01J23/20; H01J2893/00; H01J2893/0001; H01J2893/0012; H01J2893/0027
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-24 | 1972-09-23 | 1973-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-24 | 1976-09-23 | 1977-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-24 | 1980-09-23 | 1981-03-25 | $7700.00 | Window Closed / Lapsed |