US2429900A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaft operator and lock
Assignee: AUTOMATIC LOCKING DEVICES Inc
•
Filing: 1944-04-18
•
Granted: 1947-10-28
•
Expires: 1964-04-18
Abstract
No abstract record available.
Inventors
- 👤 Spraragen Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:02
CPC Classifications
G; G05; G05G; G05G1/00; G05G1/08; G05G1/10; G05G1/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US922138A
Cited
US945909A
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US1277800A
Cited
US1595499A
Cited
US1537223A
Cited
US1577714A
Cited
FR641927A
Cited
US1774843A
Cited
US2276777A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-10-27 | 1951-04-28 | 1951-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-10-27 | 1955-04-28 | 1955-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-10-27 | 1959-04-28 | 1959-10-28 | $7700.00 | Window Closed / Lapsed |