Patent US2473502A successfully refreshed from Google Patents.
US2473502A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Joint
Assignee: Individual
•
Filing: 1945-07-14
•
Granted: 1949-06-21
•
Expires: 1965-07-14
Abstract
No abstract record available.
Inventors
- 👤 Francis N Bard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:03
CPC Classifications
F; F16; F16L; F16L27/00; F16L27/02; F16L27/04; F16L27/06; F16L27/067; Y; Y10; Y10S; Y10S277/00; Y10S277/91
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US645823A
Cited
US741106A
Cited
US887753A
Cited
US1154937A
Cited
US1436331A
Cited
US1526959A
Cited
US1671975A
Cited
DE497482C
Cited
US2076028A
Cited
US2095728A
Cited
US2158131A
Cited
US2377196A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-20 | 1952-12-20 | 1953-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-20 | 1956-12-20 | 1957-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-20 | 1960-12-20 | 1961-06-21 | $7700.00 | Window Closed / Lapsed |