US2723867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cartridge-type turbine packing
Assignee: Pyle National Co
•
Filing: 1952-03-17
•
Granted: 1955-11-15
•
Expires: 1972-03-17
Abstract
No abstract record available.
Inventors
- 👤 John G Howard
- 👤 Frank J Veselsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:28
CPC Classifications
F; F01; F01D; F01D11/00; F01D11/003
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US670565A
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US872366A
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US976369A
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GB108706A
Cited
US1377143A
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US1580603A
Cited
US1689874A
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US1613924A
Cited
US2165845A
Cited
US2439917A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-14 | 1959-05-16 | 1959-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-14 | 1963-05-16 | 1963-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-14 | 1967-05-16 | 1967-11-15 | $7700.00 | Window Closed / Lapsed |