Patent US3293645A successfully refreshed from Google Patents.
US3293645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slotted cylindrical antenna
Assignee: Individual
•
Filing: 1964-07-09
•
Granted: 1966-12-20
•
Expires: 1984-07-09
Abstract
No abstract record available.
Inventors
- 👤 Elza R Farley
- 👤 Stafford W Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:58
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/27; H01Q1/28; H01Q1/281; H01Q13/00; H01Q13/10; H01Q13/12
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
75 words
IN A MISSILE, A SLOTTED CYLINDER MEANS SURROUNDING SAID MISSILE, THE PERIPHERAL WALL OF SAID CYLINDER BEING FLUSH WITH THE OUTER WALL OF SAID MISSILE AND HAVING A SERIES OF SPACED PERIPHERAL SLOTS PROVIDED THEREIN, SAID SLOTS ARRANGED IN PLANES PERPENDICULAR TO THE AXIS OF SAID CYLINDER, AND MEANS FOR FEEDING A FIRST GROUP OF ADJACENT SLOTS IN PHASES AND FOR FEEDING THE REMAINING OF SAID SLOTS IN ANTI-PHASE WITH SAID FIRST GROUP OF SLOTS.
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) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |