Patent US4417177A successfully refreshed from Google Patents.
Patent US2448900A successfully refreshed from Google Patents.
US2448900A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ticket holder
Assignee: —
•
Filing: —
•
Granted: 1948-09-07
•
Expires: 1965-09-07
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:53
CPC Classifications
B; B42; B42F; B42F17/00; B42F17/02; B61; B61D; B61D41/00; B61D41/06; Y; Y10; Y10T; Y10T24/00; Y10T24/34; Y10T24/3427; Y10T24/3439; Y10T24/344; Y10T24/3444
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US417253A
Cited
US1029459A
Cited
US1262920A
Cited
US1338066A
Cited
US1649645A
Cited
US1765043A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-09-07 | 1952-03-08 | 1952-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-09-07 | 1956-03-08 | 1956-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-09-07 | 1960-03-08 | 1960-09-07 | $7700.00 | Window Closed / Lapsed |