Inventor
John R. Bookwalter
Inventor
Brattleboro, VT, US
Overview
Patents· 23 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
A61Bprimary
A61BDiagnosis50%
Y10TTechnical subjects covered by former us classification19%
A61GTransport, personal conveyances, or accommodation specially adapted for patients or disabled persons13%
LOC249%
B25BTools or bench devices not otherwise provided for, for fastening, connecting, disengaging, or holding3%
F16BDevices for fastening or securing constructional elements or machine parts together, e.g. nails, bolts, circlips, clamps, clips or wedges3%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests3%
PatentTitleYear
9,125,641'Three dimensional tilt rachet with self retaining mechanism'20158,894,029'Retractor ring holder'20146,808,493'Adjustable ratchet retractor support apparatus'20046,620,097'Three-dimensional tilt ratchet mechanism'20036,530,883'Surgical retractor assembly'20036,241,659'Surgical retractor assembly with controlled rotation'2001D0389913'Combined lap aroscopic tool holder and positioner'1998D0389242'Combined laphroscopic tool holder and positioner'1998D0388515'Combined laparoscopic tool holder and positioner'19975,520,608'Orthopaedic retractor blade'19965,375,481'Multi-position ratchet mechanism'19945,365,921'Flip-up sternal retractor'19945,356,100'Sliding-fit operating table stabilizing post and rack'1994D0349573'Quick-lock holder for laparoscopic instrument'19945,320,314'Built-in enclosed stabilizer post operating table clamp'19945,320,444'Enclosed surgical apparatus clamp'1994D0323390'Security clip for joining a feed line to a cannula'19924,926,877'Biopsy needle with completely closable cutting end bore'19904,771,492'Trip bar for hospital bed crib side'19884,467,791'Surgical retractor holder'19844,424,724'Multi-position ratchet mechanism'19844,421,108'Surgical retractor holder'19834,254,763'Surgical retractor assembly'1981Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1981–2003Patents assigned to CODMAN & SHURTLEFF (8)· patent assignee history
1981–2015Based in Putney, VT, US· patent location history
1983–2014Based in Brattleboro, VT, US· patent location history
1988–2014Patents assigned to BOOKWALTER JOHN R (8)· patent assignee history
1988–1992Patents assigned to PAINE DONALD A (2)· patent assignee history
1994–2004Patents assigned to FLEXBAR MACHINE CORP (5)· patent assignee history
1994Patents assigned to BOOKWALTER WILLIAM H (4)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| BOOKWALTER JOHN Rself | 8 | 1988–2014 |
| CODMAN & SHURTLEFF | 8 | 1981–2003 |
| FLEXBAR MACHINE CORP | 5 | 1994–2004 |
| BOOKWALTER WILLIAM H | 4 | 1994 |
| PAINE DONALD A | 2 | 1988–1992 |
Locations
| Location | Patents | Span |
|---|---|---|
| Brattleboro, VT, US | 18 | 1983–2014 |
| Putney, VT, US | 5 | 1981–2015 |