US3276048A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring assembly
Assignee: Individual
•
Filing: 1964-03-03
•
Granted: 1966-10-04
•
Expires: 1984-03-03
Abstract
No abstract record available.
Inventors
- 👤 Ronald H Beckman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:45
CPC Classifications
A; A47; A47C; A47C27/00; A47C27/04; A47C27/06; A47C27/065; Y; Y10; Y10S; Y10S297/00; Y10S297/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2864434A
Cited
US2150747A
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US2350711A
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US2792112A
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DE1148718B
Cited
US2979739A
Cited
US2975892A
Cited
US3201111A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |