US2772068A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seal guard
Assignee: Grove Valve and Regulator Co
•
Filing: 1951-10-09
•
Granted: 1956-11-27
•
Expires: 1971-10-09
Abstract
No abstract record available.
Inventors
- 👤 Marvin H Grove
- 👤 Austin U Bryant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:32
CPC Classifications
F; F16; F16K; F16K3/00; F16K3/22; F16K3/24; F16K3/246; F16K1/00; F16K1/32; F16K1/34; F16K1/42; F16K1/425; F16K1/427
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE40549C
Cited
US969803A
Cited
US1385019A
Cited
US1954018A
Cited
US2163472A
Cited
US2409220A
Cited
US2414451A
Cited
US2469921A
Cited
US2515029A
Cited
US2583539A
Cited
US2659568A
Cited
US2666614A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-27 | 1960-05-28 | 1960-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-27 | 1964-05-28 | 1964-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-27 | 1968-05-28 | 1968-11-27 | $7700.00 | Window Closed / Lapsed |