US3208132A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a multi-walled chamber
Assignee: Individual
•
Filing: 1962-04-13
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Granted: 1965-09-28
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Expires: 1982-04-13
Abstract
No abstract record available.
Inventors
- 👤 William J D Escher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:19
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/42; F02K9/60; F02K9/62; F02K9/64; B; B21; B21D; B21D53/00; B21D53/02; B21D53/04; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49346; Y10T29/4935; Y10T29/49357; Y10T29/49805; Y10T29/49806; Y10T29/4981; Y10T29/49826; Y10T29/49879; Y10T29/49893
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
THE METHOD OF MANUFACTURING A MULTI-WALLED, PASSAGEWAY CONTAINING CHAMBER COMPRISING THE STEPS OF: FORMING A FIRST BLANK; POSITIONING AT LEAST ONE PREFORMED MOLD ADJACENT SAID FIRST BLANK; FORMING A SECOND BLANK BY EXPANDING SAID SECOND BLANK WITHIN THE COMBINATION OF SAID FIRST BLANK AND SAID POSITIONED MOLD; JOINING SAID FIRST BLANK AND SAID SECOND BLANK; AND REMOVING SAID MOLD TO FORM A PASSAGEWAY BETWEEN SAID BLANKS.
Claim 2
Independent Claim
66 words
THE METHOD OF MANUFACTURING A MULTI-WALLED, PASSAGEWAY CONTAINING CHAMBER COMPRISING THE STEPS OF: FORMING A FIRST BLANK; POSITIONING AT LEAST ONE PREFORMED MOLD ADJACENT SAID FIRST BLANK; FORMING A SECOND BLANK BY EXPANDING SAID SECOND BLANK WITHIN THE COMBINATION OF SAID FIRST BLANK AND SAID POSITIONED MOLD; JOINING SAID FIRST BLANK AND SAID SECOND BLANK; AND REMOVING SAID MOLD TO FORM A PASSAGEWAY BETWEEN SAID BLANKS.
References Cited (Backward Citations)
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |