Patent US2607706A successfully refreshed from Google Patents.
US2607706A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of coating fluorescent lamps
Assignee: GTE Sylvania Inc
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Filing: 1947-04-30
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Granted: 1952-08-19
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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 13:23
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.
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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 |