US2869173A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety device for diaphragm actuated means
Assignee: HARTESVELDT VAN
•
Filing: 1956-06-11
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Granted: 1959-01-20
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Expires: 1976-06-11
Abstract
No abstract record available.
Inventors
- 👤 Carroll H Van Hartesveldt
- 👤 Charles S Davidson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:01
CPC Classifications
B; B30; B30B; B30B1/00; B30B1/003; B29; B29C; B29C43/00; Y; Y10; Y10S; Y10S264/00; Y10S264/50; Y10S425/00; Y10S425/045
Claims Analysis
Total Claims: 0
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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) | 1962-01-19 | 1962-07-21 | 1963-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-19 | 1966-07-21 | 1967-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-19 | 1970-07-21 | 1971-01-20 | $7700.00 | Window Closed / Lapsed |