US3053594A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hollow piston
Assignee: —
•
Filing: —
•
Granted: 1962-09-11
•
Expires: 1979-09-11
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:31
CPC Classifications
F; F01; F01B; F01B3/00; F01B3/0082; F01B3/0085; F16; F16J; F16J1/00; F16J1/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2735735A
Cited
US1283800A
Cited
US2161143A
Cited
US2168850A
Cited
US2674950A
Cited
US2633202A
Cited
US2730960A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-10 | 1966-03-12 | 1966-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-10 | 1970-03-12 | 1970-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-10 | 1974-03-12 | 1974-09-11 | $7700.00 | Window Closed / Lapsed |