US2813053A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of making a lamp shade
Assignee: DON J STEFANI
•
Filing: 1954-02-23
•
Granted: 1957-11-12
•
Expires: 1974-02-23
Abstract
No abstract record available.
Inventors
- 👤 Leon A Tuomala
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:14
CPC Classifications
F; F21; F21V; F21V1/00; Y; Y10; Y10S; Y10S264/00; Y10S264/04; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1036; Y10T156/1038; Y10T156/1052
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
THE PROCESS OF CONSTRUCTING A LAMP SHADE, COMPRISING: CUTTING A SHET OF SOLIDIFIED-FOAM POLYSTYRENE RESIN INTO GENERALLY RECTANGULAR FORM WITH PARALLEL LONGITUDINALLY EXTENDING EDGE, PASSING SAID SHEET BETWEEN ROLLERS TO OBTAIN A REDUCTION IN THE THICKNESS THEREOF, APPLYING A COATING TO ONE OF THE FACES OF SUCCH REDUCED SHEET, THEN SHAPING SUCH PIECE INTO GENERALLY CYLINDRICAL FORM WITH A SUITABLE SUPPORT FRAME SECURED THERETO AND WITH THE SIDE EDGES IN ABUTTING RELATIONSHIP, AND FINALLY APPLYING A COATING TO THE OTHER FACE OF SUCH PIECE.
Claim 2
Dependent Claim
84 words
THE PROCESS OF CONSTRUCTING A LAMP SHADE, COMPRISING: CUTTING A SHET OF SOLIDIFIED-FOAM POLYSTYRENE RESIN INTO GENERALLY RECTANGULAR FORM WITH PARALLEL LONGITUDINALLY EXTENDING EDGE, PASSING SAID SHEET BETWEEN ROLLERS TO OBTAIN A REDUCTION IN THE THICKNESS THEREOF, APPLYING A COATING TO ONE OF THE FACES OF SUCCH REDUCED SHEET, THEN SHAPING SUCH PIECE INTO GENERALLY CYLINDRICAL FORM WITH A SUITABLE SUPPORT FRAME SECURED THERETO AND WITH THE SIDE EDGES IN ABUTTING RELATIONSHIP, AND FINALLY APPLYING A COATING TO THE OTHER FACE OF SUCH PIECE.
References Cited (Backward Citations)
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Cited
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Cited
US2677756A
Cited
GB669918A
Cited
US2681321A
Cited
US2644883A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-11 | 1961-05-13 | 1961-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-11 | 1965-05-13 | 1965-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-11 | 1969-05-13 | 1969-11-12 | $7700.00 | Window Closed / Lapsed |