US2974372A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spiral slide-fastener elements
Assignee: Individual
•
Filing: 1959-07-23
•
Granted: 1961-03-14
•
Expires: 1979-07-23
Abstract
No abstract record available.
Inventors
- 👤 Yoshida Tadao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:07
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/024; H04N1/032; H04N1/0323; B; B29; B29D; B29D5/00; B29D5/06; Y; Y10; Y10S; Y10S264/00; Y10S264/66; Y10S425/00; Y10S425/007; Y10S425/814; Y10T; Y10T24/00; Y10T24/25; Y10T24/2518; Y10T29/00; Y10T29/49; Y10T29/49782; Y10T29/49785
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US299802A
Cited
US2209114A
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US2431928A
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US2450324A
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US2513164A
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US2636523A
Cited
US2740987A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-13 | 1964-09-12 | 1965-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-13 | 1968-09-12 | 1969-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-13 | 1972-09-12 | 1973-03-14 | $7700.00 | Window Closed / Lapsed |