US3424226A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lost wax casting method
Assignee: Individual
•
Filing: 1966-12-16
•
Granted: 1969-01-28
•
Expires: 1986-12-16
Abstract
No abstract record available.
Inventors
- 👤 Byron Steele
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:24
CPC Classifications
B; B22; B22C; B22C9/00; B22C9/02; B22C9/04; Y; Y10; Y10S; Y10S425/00; Y10S425/012
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
THE PROCESS OF CASTING A DUPLICATE FROM A MODEL, COMPRISING THE STEPS OF: (A) FORMING A PRIMARY INVESTMENT, CONTAINING A FORMED HOLES, ABOUT THE MODEL; (B) SEPARATING THE MODEL FROM THE PRIMARY INVESTMENT; (C) FORMING A SHELL OF A REMOVABLE DUPLICATIVE MATERIAL IN THE PRIMARY INVESTMENT; (D) FORMING A CORE IN SAID SHELL AND PRIMARY INVESTMENT;
Claim 2
Dependent Claim
56 words
THE PROCESS OF CASTING A DUPLICATE FROM A MODEL, COMPRISING THE STEPS OF: (A) FORMING A PRIMARY INVESTMENT, CONTAINING A FORMED HOLES, ABOUT THE MODEL; (B) SEPARATING THE MODEL FROM THE PRIMARY INVESTMENT; (C) FORMING A SHELL OF A REMOVABLE DUPLICATIVE MATERIAL IN THE PRIMARY INVESTMENT; (D) FORMING A CORE IN SAID SHELL AND PRIMARY INVESTMENT;
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-28 | 1972-07-29 | 1973-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-28 | 1976-07-29 | 1977-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-28 | 1980-07-29 | 1981-01-28 | $7700.00 | Window Closed / Lapsed |