Patent US1979221A successfully refreshed from Google Patents.
Patent US4457510A successfully refreshed from Google Patents.
Patent US652114A successfully refreshed from Google Patents.
Patent US2002607A successfully refreshed from Google Patents.
Patent US3673435A successfully refreshed from Google Patents.
Patent US2011007A successfully refreshed from Google Patents.
US2011007A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making composite valves
Assignee: Individual
•
Filing: 1933-10-13
•
Granted: 1935-08-13
•
Expires: 1953-10-13
Abstract
No abstract record available.
Inventors
- 👤 Edward M May
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:16
CPC Classifications
B; B22; B22D; B22D13/00; B22D13/06; B22D13/066; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49405; Y10T29/49412; Y10T29/49416; Y10T29/49417
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1938-08-12 | 1939-02-11 | 1939-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-08-12 | 1943-02-11 | 1943-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-08-12 | 1947-02-11 | 1947-08-13 | $7700.00 | Window Closed / Lapsed |