Patent US1715439A successfully refreshed from Google Patents.
Patent US3137039A successfully refreshed from Google Patents.
US3137039A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molds for making air
Assignee: —
•
Filing: —
•
Granted: 1964-06-16
•
Expires: 1981-06-16
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:03
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/0001; B29; B29C; B29C37/00; B29C37/0053; Y; Y10; Y10S; Y10S55/00; Y10S55/05
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
AN APPARATUS FOR MAKING FILTER ELEMENTS FOR AIR CLEANERS AND THE LIKE AND COMPRISING A PAIR OF MOLDS EACH HAVING SPACED AND OPPOSITELY DISPOSED AND EXTERNALLY EXTENDING RECESSES FORMED THEREIN FOR SUPPORTING AND CURING THE SPACED AND ALIGNED ENDS OF A FILTER ELEMENT IMMERSED IN THERMALLY SETTING SEALING MEANS, SAID PAIR OF MOLDS HAVING OPPOSITELY DISPOSED SUPPORTING LEDGE AND GUIDE MEANS ASSOCIATED THEREWITH AND POSITIONED INWARDLY OF SAID RECESS FOR MUTUAL ENGAGEMENT FOR ALIGNING AND POSITIONING SAID MOLDS AND SUPPORTING ONE OF SAID MOLDS UPON THE OTHER AND SPACING SAID RECESSES IN OPPOSITELY DISPOSED AND EXTENDING RELATION.
Claim 2
Independent Claim
97 words
AN APPARATUS FOR MAKING FILTER ELEMENTS FOR AIR CLEANERS AND THE LIKE AND COMPRISING A PAIR OF MOLDS EACH HAVING SPACED AND OPPOSITELY DISPOSED AND EXTERNALLY EXTENDING RECESSES FORMED THEREIN FOR SUPPORTING AND CURING THE SPACED AND ALIGNED ENDS OF A FILTER ELEMENT IMMERSED IN THERMALLY SETTING SEALING MEANS, SAID PAIR OF MOLDS HAVING OPPOSITELY DISPOSED SUPPORTING LEDGE AND GUIDE MEANS ASSOCIATED THEREWITH AND POSITIONED INWARDLY OF SAID RECESS FOR MUTUAL ENGAGEMENT FOR ALIGNING AND POSITIONING SAID MOLDS AND SUPPORTING ONE OF SAID MOLDS UPON THE OTHER AND SPACING SAID RECESSES IN OPPOSITELY DISPOSED AND EXTENDING RELATION.
References Cited (Backward Citations)
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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) | 1967-06-16 | 1967-12-16 | 1968-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-16 | 1971-12-16 | 1972-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-16 | 1975-12-16 | 1976-06-16 | $7700.00 | Window Closed / Lapsed |