US2369828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for drilling holes in screwheads and the like
Assignee: Individual
•
Filing: 1943-01-02
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Granted: 1945-02-20
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Expires: 1963-01-02
Abstract
No abstract record available.
Inventors
- 👤 Marion W Humphreys
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:44
CPC Classifications
B; B23; B23Q; B23Q39/00; B23Q39/02; B23Q39/021; B23Q39/025; B23Q39/026; B23Q11/00; B23Q11/10; B23Q5/00; B23Q5/02; B23Q5/04; B23Q5/22; B23Q5/34; B23Q5/341; B23Q2220/00; B23Q2220/002; Y; Y10; Y10T; Y10T408/00; Y10T408/18; Y10T408/36; Y10T408/375; Y10T408/378; Y10T408/3784; Y10T408/44; Y10T408/46; Y10T408/55; Y10T408/561; Y10T408/5623
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1948-02-20 | 1948-08-21 | 1949-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-02-20 | 1952-08-21 | 1953-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-02-20 | 1956-08-21 | 1957-02-20 | $7700.00 | Window Closed / Lapsed |