US2607706A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of coating fluorescent lamps
Assignee: GTE Sylvania Inc
•
Filing: 1947-04-30
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Granted: 1952-08-19
•
Expires: 1967-04-30
Abstract
No abstract record available.
Inventors
- 👤 Erwin F Lowry
- 👤 Andrew Y Mace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:13
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/20; H01J9/22; H01J9/221; H01J9/223
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
THE METHOD OF SPRAYING A SUSPENSION OF FLUORESCENT MATERIAL ON THE INNER WALL OF ALL ELONGATED SUBSTANTIALLY HELICAL GLASS ENVELOPE, SAID METHOD COMPRISING: THREADING SAID ENVELOPE OVER AN ELONGATED FIXED SPRAY GUN; INTRODUCING A SUSPENSION OF FLOURESCENT MATERIAL INTO SAID SPRAY GUN AND FORCING A SPRAY THEREOF TO BE EMITTED BY SAID GUN AND BE DEPOSITED ON THE INNER WALL OF SAID ENVELOPE; GRADUALLY WITHDRAWING SAID ENVELOPE AS THE GUN DEPOSITS A SUSPENSION OF FLUORESCENT MATERIAL ON THE INNER WALL THEREOF; AND HOLDING SAID ENVELOPE AGAINST RELATIVE ROTATION, WITH RESPECT TO SAID SPRAY GUN IN A PLANE TRANSVERSE TO SAID SPRAY GUN DURING SAID WITHDRAWAL OF SAID ENVELOPE.
Claim 2
Independent Claim
108 words
THE METHOD OF SPRAYING A SUSPENSION OF FLUORESCENT MATERIAL ON THE INNER WALL OF ALL ELONGATED SUBSTANTIALLY HELICAL GLASS ENVELOPE, SAID METHOD COMPRISING: THREADING SAID ENVELOPE OVER AN ELONGATED FIXED SPRAY GUN; INTRODUCING A SUSPENSION OF FLOURESCENT MATERIAL INTO SAID SPRAY GUN AND FORCING A SPRAY THEREOF TO BE EMITTED BY SAID GUN AND BE DEPOSITED ON THE INNER WALL OF SAID ENVELOPE; GRADUALLY WITHDRAWING SAID ENVELOPE AS THE GUN DEPOSITS A SUSPENSION OF FLUORESCENT MATERIAL ON THE INNER WALL THEREOF; AND HOLDING SAID ENVELOPE AGAINST RELATIVE ROTATION, WITH RESPECT TO SAID SPRAY GUN IN A PLANE TRANSVERSE TO SAID SPRAY GUN DURING SAID WITHDRAWAL OF SAID ENVELOPE.
References Cited (Backward Citations)
US1758810A
Cited
US1936247A
Cited
US1999014A
Cited
US2168917A
Cited
US2145279A
Cited
US2192869A
Cited
US2336946A
Cited
US2433116A
Cited
US2348714A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-19 | 1956-02-18 | 1956-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-19 | 1960-02-18 | 1960-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-19 | 1964-02-18 | 1964-08-19 | $7700.00 | Window Closed / Lapsed |