US2850409A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of deleting electrically conductive films from a surface
Assignee: Libbey Owens Ford Glass Co
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Filing: 1955-04-25
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Granted: 1958-09-02
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Expires: 1975-04-25
Abstract
No abstract record available.
Inventors
- 👤 James L Boicey
- 👤 Robert P Roetter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:20
CPC Classifications
C; C03; C03C; C03C17/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
A METHOD OF DELETING FILM FROM A FILMED SURFACE WHICH COMPRISES APPLYING A PROTECTIVE COATING OVER SAID FILM, ADDITIONALLY HEAT SEALING THE PROTECTIVE COATING TO SAID FILM ALONG A DEMARCATION LINE, REMOVING A PORTION OF SAID PROTECTIVE COATING FROM ONE SIDE OF SAID DEMARCATION LINE TO EXPOSE A PORTION OF SAID FILM, AND REMOVING THE EXPOSED PORTION OF THE FILM.
Claim 2
Independent Claim
60 words
A METHOD OF DELETING FILM FROM A FILMED SURFACE WHICH COMPRISES APPLYING A PROTECTIVE COATING OVER SAID FILM, ADDITIONALLY HEAT SEALING THE PROTECTIVE COATING TO SAID FILM ALONG A DEMARCATION LINE, REMOVING A PORTION OF SAID PROTECTIVE COATING FROM ONE SIDE OF SAID DEMARCATION LINE TO EXPOSE A PORTION OF SAID FILM, AND REMOVING THE EXPOSED PORTION OF THE FILM.
References Cited (Backward Citations)
US2346231A
Cited
US2606566A
Cited
US2487255A
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US2487254A
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US2557983A
Cited
US2559969A
Cited
US2648752A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-01 | 1962-03-03 | 1962-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-01 | 1966-03-03 | 1966-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-01 | 1970-03-03 | 1970-09-02 | $7700.00 | Window Closed / Lapsed |