US3305043A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acoustic communication device and toy
Assignee: Individual
•
Filing: 1965-03-08
•
Granted: 1967-02-21
•
Expires: 1985-03-08
Abstract
No abstract record available.
Inventors
- 👤 Charles E Pfund
- 👤 John W Dawson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:39
CPC Classifications
A; A63; A63H; A63H33/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A PORTABLE TWO-WAY ACOUSTIC COMMUNICATION DEVICE COMPRISING A HAND-HELD PARABOLOID, A LARGE DIAMETER VOICE TUBE MOUNTED ON THE AXIS OF SAID PARABOLOID AND HAVING A BEND IN OPERATIVE CONDITION TO EXTEND ONE OPEN END OF SAID TUBE ON THE CONVEX SIDE OF SAID PARABOLOID TO BE OFFSET FROM SAID AXIS AND THE OTHER OPEN END OF SAID TUBE POSITIONED TO TRANSMIT AND RECEIVE ACOUSTIC ENERGY FROM THE EFFECTIVE FOCUS OF SAID PARABOLOID, THE OFF-SET SAID ONE END FACILITATING COMMUNICATION WITH THE MOUTH OR EAR OF THE USER WHILE SIGHTING ALONG A DIRECTION PARALLEL TO SAID AXIS.
Claim 2
Dependent Claim
96 words
A PORTABLE TWO-WAY ACOUSTIC COMMUNICATION DEVICE COMPRISING A HAND-HELD PARABOLOID, A LARGE DIAMETER VOICE TUBE MOUNTED ON THE AXIS OF SAID PARABOLOID AND HAVING A BEND IN OPERATIVE CONDITION TO EXTEND ONE OPEN END OF SAID TUBE ON THE CONVEX SIDE OF SAID PARABOLOID TO BE OFFSET FROM SAID AXIS AND THE OTHER OPEN END OF SAID TUBE POSITIONED TO TRANSMIT AND RECEIVE ACOUSTIC ENERGY FROM THE EFFECTIVE FOCUS OF SAID PARABOLOID, THE OFF-SET SAID ONE END FACILITATING COMMUNICATION WITH THE MOUTH OR EAR OF THE USER WHILE SIGHTING ALONG A DIRECTION PARALLEL TO SAID AXIS.
References Cited (Backward Citations)
US220169A
Cited
US1911772A
Cited
US958680A
Cited
US1040775A
Cited
US1649538A
Cited
US1899994A
Cited
US1889966A
Cited
US2017122A
Cited
US2052550A
Cited
US2228024A
Cited
US2534847A
Cited
US2496988A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |