US3437362A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expanding devices
Assignee: Individual
•
Filing: 1966-10-17
•
Granted: 1969-04-08
•
Expires: 1986-10-17
Abstract
No abstract record available.
Inventors
- 👤 Adrian Gottfried Offenbroich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:41
CPC Classifications
F; F16; F16B; F16B7/00; F16B7/18; F16B7/04; F16B7/0406; F16B7/0413; F16B7/044; F16B7/0446; Y; Y10; Y10T; Y10T279/00; Y10T279/10; Y10T279/1037; Y10T279/1041; Y10T279/1045; Y10T279/1054; Y10T279/1058; Y10T403/00; Y10T403/55; Y10T403/557; Y10T403/76
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR708055A
Cited
US1926798A
Cited
US2249162A
Cited
US2250631A
Cited
GB548983A
Cited
US2499781A
Cited
US3059514A
Cited
US2960342A
Cited
DE1191182B
Cited
US3313199A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-07 | 1972-10-07 | 1973-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-07 | 1976-10-07 | 1977-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-07 | 1980-10-07 | 1981-04-08 | $7700.00 | Window Closed / Lapsed |