US3452501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Snap locking structural device
Assignee: Individual
•
Filing: 1966-05-02
•
Granted: 1969-07-01
•
Expires: 1986-05-02
Abstract
No abstract record available.
Inventors
- 👤 Ernest C Zimmer
- 👤 Raymond W Sickler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:46
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/30; E04C2/38; E04C2/384; E04B; E04B2/00; E04B2/74; E04B2/76; E04B2/78; E04B2/7854; E04F; E04F10/00; E04F10/08; E04H; E04H4/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB191215921A
Cited
US1949543A
Cited
US2079635A
Cited
US3037593A
Cited
US3216538A
Cited
US3234697A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-30 | 1972-12-30 | 1973-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-30 | 1976-12-30 | 1977-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-30 | 1980-12-30 | 1981-07-01 | $7700.00 | Window Closed / Lapsed |