Patent US2638310A successfully refreshed from Google Patents.
US2638310A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary fluid motor for dry shavers
Assignee: Individual
•
Filing: 1948-02-06
•
Granted: 1953-05-12
•
Expires: 1968-02-06
Abstract
No abstract record available.
Inventors
- 👤 Lester C Merriman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:09
CPC Classifications
F; F01; F01B; F01B23/00; F01B23/06; B; B26; B26B; B26B19/00; B26B19/28; B26B19/34; Y; Y10; Y10S; Y10S415/00; Y10S415/904
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US807435A
Cited
US847706A
Cited
US996787A
Cited
US1073824A
Cited
US1119370A
Cited
US1156594A
Cited
US1415298A
Cited
US1811903A
Cited
US2233349A
Cited
US2276714A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-11 | 1956-11-10 | 1957-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-11 | 1960-11-10 | 1961-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-11 | 1964-11-10 | 1965-05-12 | $7700.00 | Window Closed / Lapsed |