US2630145A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring unit assembling machine
Assignee: Individual
•
Filing: 1949-02-10
•
Granted: 1953-03-03
•
Expires: 1969-02-10
Abstract
No abstract record available.
Inventors
- 👤 Robert H Stevens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:33
CPC Classifications
B; B21; B21F; B21F33/00; B21F33/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE118993C
Cited
GB113568A
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US687931A
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US1665226A
Cited
US2012904A
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US2209558A
Cited
US2161689A
Cited
US2282664A
Cited
US2351659A
Cited
US2388106A
Cited
US2470812A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-02 | 1956-09-01 | 1957-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-02 | 1960-09-01 | 1961-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-02 | 1964-09-01 | 1965-03-03 | $7700.00 | Window Closed / Lapsed |