Patent US2707688A successfully refreshed from Google Patents.
US2707688A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of stain marking articles having vitreous surfaces
Assignee: Individual
•
Filing: 1951-11-03
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Granted: 1955-05-03
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Expires: 1971-11-03
Abstract
No abstract record available.
Inventors
- 👤 Seymour N Blackman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:30
CPC Classifications
C; C03; C03C; C03C21/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
A METHOD OF STAIN MARKING A FILLED GLASS FEVER THERMOMETER, SAID METHOD COMPRISING APPLYING TO THE THERMOMETER A COMPOSITION IN THE SHAPE OF MARKS TO BE FORMED ON THE THERMOMETER, SAID COMPOSITION INCLUDING A HEAT-DECOMPOSABLE METALLIC COMPOUND, AND LOCALLY HEATING ONLY THE COMPOSITION IN A HIGH FREQUENCY FIELD OF ELECTRIC ENERGY.
Claim 2
Independent Claim
51 words
A METHOD OF STAIN MARKING A FILLED GLASS FEVER THERMOMETER, SAID METHOD COMPRISING APPLYING TO THE THERMOMETER A COMPOSITION IN THE SHAPE OF MARKS TO BE FORMED ON THE THERMOMETER, SAID COMPOSITION INCLUDING A HEAT-DECOMPOSABLE METALLIC COMPOUND, AND LOCALLY HEATING ONLY THE COMPOSITION IN A HIGH FREQUENCY FIELD OF ELECTRIC ENERGY.
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) | 1958-05-02 | 1958-11-01 | 1959-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-02 | 1962-11-01 | 1963-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-02 | 1966-11-01 | 1967-05-03 | $7700.00 | Window Closed / Lapsed |