Patent US3144308A successfully refreshed from Google Patents.
US3144308A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple crystal growing head
Assignee: Individual
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Filing: 1961-07-03
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Granted: 1964-08-11
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Expires: 1981-07-03
Abstract
No abstract record available.
Inventors
- 👤 Carl M Tarter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:42
CPC Classifications
C; C30; C30B; C30B15/00; C30B15/32; C30B15/005; C30B15/30; Y; Y10; Y10S; Y10S117/00; Y10S117/911; Y10T; Y10T117/00; Y10T117/10; Y10T117/1024; Y10T117/1032; Y10T117/106; Y10T117/1072
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A CRYSTAL GROWING HEAD COMPRISING A LOWER PLATE FORMED WITH AT LEAST ONE RADIAL FIRST SLOT, A TOP PLATE ABOVE AND VERTICALLY MOVABLE RELATIVE TO SAID LOWER PLATE AND FORMED WITH A SECOND SLOT VERTICALLY ALIGNED WITH SAID FIRST SLOT, A SEED ROD EXTENDING THROUGH SAID SLOTS AND BELOW SAID FIRST PLATE, A FIRST GUIDE APERTURNED FOR SAID SEED ROD, FIRST MEANS MOUNTING SAID FIRST GUIDE FOR MOVEMENT ON SAID LOWER PLATE PARALLEL TO SAID FIRST SLOT, A SECOND GUIDE APERTURED FOR SAID SEED ROD AND MOUNTING SAID SEED ROD FOR VERTICAL MOVEMENT WITH SAID TOP PLATE AND ROTATIVE
Claim 2
Dependent Claim
99 words
A CRYSTAL GROWING HEAD COMPRISING A LOWER PLATE FORMED WITH AT LEAST ONE RADIAL FIRST SLOT, A TOP PLATE ABOVE AND VERTICALLY MOVABLE RELATIVE TO SAID LOWER PLATE AND FORMED WITH A SECOND SLOT VERTICALLY ALIGNED WITH SAID FIRST SLOT, A SEED ROD EXTENDING THROUGH SAID SLOTS AND BELOW SAID FIRST PLATE, A FIRST GUIDE APERTURNED FOR SAID SEED ROD, FIRST MEANS MOUNTING SAID FIRST GUIDE FOR MOVEMENT ON SAID LOWER PLATE PARALLEL TO SAID FIRST SLOT, A SECOND GUIDE APERTURED FOR SAID SEED ROD AND MOUNTING SAID SEED ROD FOR VERTICAL MOVEMENT WITH SAID TOP PLATE AND ROTATIVE
References Cited (Backward Citations)
US2935385A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-11 | 1968-02-10 | 1968-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-11 | 1972-02-10 | 1972-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-11 | 1976-02-10 | 1976-08-11 | $7700.00 | Window Closed / Lapsed |