US3383915A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Deep-water wave recorder
Assignee: Canadian Patents and Development Ltd
•
Filing: 1965-10-22
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Granted: 1968-05-21
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Expires: 1985-10-22
Abstract
No abstract record available.
Inventors
- 👤 Reginald L G Gilbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 02:35
CPC Classifications
G; G01; G01C; G01C13/00; G01C13/002; G01C13/006; G01P; G01P15/00; G01P15/02; G01P15/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
APPARATUS FOR INDICATING A PARAMETER OF A RECIPROCATING MOTION COMPRISING, A STATOR FOR MOVEMENT BY SAID MOTION, AN ELEMENT FREELY MOVABLE RELATIVE TO THE STATOR IN A DIRECTION SUBSTANTIALLY PARALLEL TO THE MOVEMENT OF THE STATOR, THE ELEMENT ARRANGED TO BE URGED GRAVITATIONALLY TO A NEUTRAL POSITION RELATIVE TO SAID STATOR, A MULTIVIBRATOR FOR PRODUCING ELECTRICAL PULSES, SWITCH MEANS CONTROLLING SAID MULTIVIBRATOR TO APPLY AN ELECTRICAL PULSES TO SAID ELEMENT WHEN SAID ELEMENT IS IN THE NEUTRAL POSITION, THE FREQUENCY OF SAID PULSES VARYING IN ACCORDANCE WITH THE ACCELERATION OF THE STATOR.
Claim 2
Dependent Claim
92 words
APPARATUS FOR INDICATING A PARAMETER OF A RECIPROCATING MOTION COMPRISING, A STATOR FOR MOVEMENT BY SAID MOTION, AN ELEMENT FREELY MOVABLE RELATIVE TO THE STATOR IN A DIRECTION SUBSTANTIALLY PARALLEL TO THE MOVEMENT OF THE STATOR, THE ELEMENT ARRANGED TO BE URGED GRAVITATIONALLY TO A NEUTRAL POSITION RELATIVE TO SAID STATOR, A MULTIVIBRATOR FOR PRODUCING ELECTRICAL PULSES, SWITCH MEANS CONTROLLING SAID MULTIVIBRATOR TO APPLY AN ELECTRICAL PULSES TO SAID ELEMENT WHEN SAID ELEMENT IS IN THE NEUTRAL POSITION, THE FREQUENCY OF SAID PULSES VARYING IN ACCORDANCE WITH THE ACCELERATION OF THE STATOR.
References Cited (Backward Citations)
US2049129A
Cited
US2613071A
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US2846207A
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US2940306A
Cited
US3110178A
Cited
US3213694A
Cited
US3301048A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-21 | 1971-11-20 | 1972-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-21 | 1975-11-20 | 1976-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-21 | 1979-11-20 | 1980-05-21 | $7700.00 | Window Closed / Lapsed |