Patent US2408816A successfully refreshed from Google Patents.
US2408816A
Expired / Lapsed
US
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Piezoelectric gauge and method of making the same
Assignee: Individual
•
Filing: 1944-02-10
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Granted: 1946-10-08
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Expires: 1964-02-10
Abstract
No abstract record available.
Inventors
- 👤 Maurice M Shapiro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:15
CPC Classifications
B; B06; B06B; B06B1/00; B06B1/02; B06B1/06; B06B1/0644; B06B1/0662; Y; Y10; Y10T; Y10T29/00; Y10T29/42; Y10T29/49; Y10T29/49002; Y10T29/49009
Claims Analysis
Total Claims: 0
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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) | 1949-10-07 | 1950-04-08 | 1950-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-10-07 | 1954-04-08 | 1954-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-10-07 | 1958-04-08 | 1958-10-08 | $7700.00 | Window Closed / Lapsed |